Electrical Engineer Team Leader
Resume:
Lucy Hosking Resume 831-***-**** *****@**********.***
Results driven Electrical Engineer bringing creativity, intellectual rigor and the best combination of empirical and theoretical knowledge to all problems. Responsible for growth and market leadership in diverse fields with over 45 years of successful, delivered projects. Prolific inventor and innovator, team leader and mentor.
PROFESSIONAL EXPERIENCE
• Market research through product design to high volume production
• Strong second major in mechanical engineering, fabrication, welding, machinist o Own & operate a machine shop in Santa Cruz to serve employers & industrial / commercial clients and to support the local art community
• High Performance Analog and Digital design
• Ultra-low noise, ultra-low distortion audio design, custom music performance equipment
• DC to Light (literally)
o Solid State Laser Control & Monitoring
o Avalanche Photodiode Control, temperature compensation, & management o Optical design
o Electronic Dispersion Compensation
o Optical Telecom Standards (inventions & IP behind SFF-8472) o Digital Laser Temperature control systems stable to +/- 0.002 C o Extensive simulations in LTspice, some Matlab, Excel with VBA o High quality analog design
o Power Electronics including
Power Converters
Power Systems
DC-DC Converters
Inverters
• Hard Real Time Embedded Control hardware & firmware o C, C++, C#, Python: embedded firmware, extensive lab & production software, GUI design o Multiple assembly languages
ARM, Motorola/NXP, PIC, MSP-430, STM, proprietary MCU design & coding o Digital servos, Data Acquisition, MSA compliance, Laser Eye Safety management o Bare metal designs, bring-up, SQA, Design For Test, Production test equipment o Altera, Xilinx, Verilog/VHDL in CPLD and Gate Array devices
• PCB design & layout:
o High Speed design & signal integrity to 30 GHz
o Rigid, Flex, Rigid/Flex, Rigid/Flex/Rigid
o Capacitive touch switch arrays, multi-layer ITO on glass and plastic, membrane switches o High Power design to KW
o High Density Interconnect down to 0.4mm BGAs
o Up to 10 layers
o Extreme miniaturization
o Design for Test / Design for Manufacturing
o ESD resistance
o EMI compliance & certification
o Self-instrumenting systems
o PADS / Mentor Graphics, Altium, Eagle, Kicad
• Prototyping skills:
o Best in the industry
o All markets, specialist in avionics, telecom, high end sound equipment o Prototypes are airworthy and survive helicopter use for decades o One-off projects built to last
Lucy Hosking Resume 831-***-**** *****@**********.*** o PCB bring-up, PCB rework, debug
• Lab Equipment:
o Network Analyzer, Oscilloscope, Spectrum Analyzer (Optical & Electrical), Digital Communication Analyzer (Optical & Electrical), Bit Error Rate Testers, Bench automation software & GUI design, Environmental Chambers
• DSP in ultra high speed communication channels, simulations for same in Matlab & Excel/VBA
• Digital & Analog servos
• Graphical User Interface Design & Coding
• IP Analysis and Litigation, Patent writing
o Named inventor on 79 US patents
• Mentoring and training for junior colleagues
• Excellent writing skills
• Vacuum Tube experience, audio through UHF transmitters
• Safety critical systems
o Aviation, Avionics & Aircraft equipment experience, private pilot o Metering & transport of dangerous chemicals
o Theatrical Flame Effects
• Battery Management
o LiPO4, LiON & Lead-Acid vehicle systems, propulsion controls, charging systems o State of Charge monitoring, State of Health estimation, cell balancing o Electrochemical Impedance Spectroscopy for early thermal runaway detection Zero Motorcycles May 2024 –Jan 2025
• Aided electrical design and PCB layout for new vehicle platform including Vehicle Control Unit, Battery Management Unit, Cell Management Unit.
• Designed & built production test equipment for same.
• Assisted in bring-up & performance evaluation of these systems.
• Provided Spice simulations for many subcircuits used in above designs.
• Design reviews for schematic & PCB layout of other team members.
• Developed novel switch gear input circuitry resistant to wet, contaminated, and aged switches.
• Developed new high accuracy traction battery current sensor.
• Mentored junior EE team members.
• Worked with battery team on early thermal runaway detection using EIS, provided Spice simulations for them.
• Worked with Firmware team to improve ADC performance on BMU & VCU with NXP S32K344 microprocessor.
Crowd Compass March 2024 – May 2024
• Uses GPS, LoRa radios, Meshtastic network & Bluetooth to locate friends with paired units in large crowds.
• Electrical redesign and new PCB layout for improved performance and manufacturability.
• Successful debut at Burning Man 2024.
Freelance August 2023 – March 2024
Various projects for performing musicians including:
• Wireless MIDI Melodica using a Yamaha melodica chassis. Designed a PCBA using a PIC 18F4520 which read the keyboard with magnetic sensors, read a pressure sensor for breath expression control, and transmitted MIDI through a CME wireless MIDI device. Powered by two LiON batteries with an integrated charging system and montoring functionality in the PIC firmware.
Lucy Hosking Resume 831-***-**** *****@**********.***
• Wireless MIDI Accordion. Designed an on-board LiON power supply and monitor system, integrated a wireless midi system into an Orla accordion used in a rock & roll band.
• FrankenSynth I and II. Fitted a high-end key frame into two Korg Kross-1 synthesizers. Designed an interface PCB using an Altera XC95144XL-10TQG100C CPLD to translate the Korg key scan method to the Native Instruments keyboard assembly. Heavily modified Korg case to accept the NI keyframe.
Dan Clark Audio September 2022 – August 2023
• Designed a high density / high speed / fine pitch PCB for audiophile headphone.
• Bluetooth-LE & USB-C streaming audio at 192KH / 24 bits.
• Researched transducer drive requirements for DCA’s proprietary planar transducers.
• Designed ultra-low distortion audio power amplifier with low battery drain.
• Achieved -140db SNR signal path with novel analog circuitry & Spice simulations. Suite-E Guitars January 2020 – September 2022
• Covid lockdown business.
• Restored and hot-rodded exotic and high-end electric guitars, basses, & keyboards.
• Designed custom performance equipment, signal processing, special effects. Finisar Corporation December 1999 – October 2019
• Created industry standards and was the company leader in creation of new patents and intellectual property that helped propel Finisar from a small company to become the worldwide technology and market leader in fiber optic communication.
• Member of standing design review committee for all products.
• Developed working models and created new theoretical models and computer simulations of new technologies.
• Specified & architected proprietary embedded controllers.
• Built prototypes, custom EMI lab hardware.
• New product bring-up & design validation.
• Created massive optics lab & production GUI systems in C#.
• Invented the SFF-8472 Digital Diagnostics systems & managed company wide implementation.
• Contributed architecture & specs to Analog Device’s ADuC 7000 series embedded ARM product line.
• Specialist in DWDM laser control systems.
• Inventor on 74 patents for Finisar.
• Technical advisor to legal teams in defense of Finisar IP and prosecution of infringing competitors, including negotiations with competitors, for royalty agreements which netted Finisar over $200 million.
Optibike September 1997 – October 2002
• World’s first truly high performance electric bicycle.
• Designed the entire electrical system for prototypes: o 2KW three phase motor driver.
o Instrument panel.
o Charging systems for Lead/Acid & NiMH batteries. o Auto-shifter.
• Dangerously overpowered and way too much fun.
Lucy Hosking Resume 831-***-**** *****@**********.*** Beta Technology / Nova Controls
• Lead Electrical Engineer at both companies.
• Supervised all product development teams.
• Industrial equipment transporting & metering dangerous chemicals safely.
• Factory automation, stock management, data logging. LAC Avionics
• Lead bench tech for navigation, radar, autopilot systems.
• Planned, customized, built, supervised full bare-metal avionics installations.
• Test flew installations & repairs.
• FAA Repairman’s Certificate, FCC 1
st
Class Radiotelephone license, Pilot-Single Engine-Land.
• Designed & built custom audio distribution & entertainment systems. Avionics Technologies Inc.
• Designed, built, & installed bespoke audio systems for news gathering & law enforcement helicopters.
Create clear and readable schematics t communication skills Component selection for minimum mass and maximum reliability EDUCATION
• Entirely, aggressively, and enthusiastically self-taught.
• Started at age seven, never stopped.
• Father was electronics instructor at Ft. Monmouth U.S. Army Signal Corps base, and a Lead Technical Writer for the rest of his career at RCA/Lockheed/Martin.
• Original course material: the full set of (non-classified) U.S. Army Technical Manuals for Electronics.
• Functioning at Master’s Degree level by High School graduation.
• DSB class at UCSB, Golita, CA.
• C++ class at UCSC Extension, Santa Clara, CA.
• MIT OpenCourseWare 6.622 “Power Electronics” – 38 lecture series Lucy Hosking Resume 831-***-**** *****@**********.*** Item Document ID Published Title
1 US 10371573 B2 2019-08-06 Electromagnetic power measurement and reporting 2 US 10079644 B2 2018-09-18 Out-of-band signal detection 3 US 10326531 B2 2019-06-18 Out-of-band signal detection 4 US 9912404 B2 2018-03-06 Electromagnetic power measurement and reporting 5 US 9887782 B2 2018-02-06 Rapid out-of-band signal communication in optical components 6 US 10581529 B2 2020-03-03 Rapid out-of-band signal communication in optical components 7 US 9852057 B2 2017-12-26 Light-weight on-chip signal monitor with integrated memory management and data collection 8 US 10628297 B2 2020-04-21 Light-weight on-chip signal monitor with integrated memory management and data collection 9 US 9438354 B2 2016-09-06 Electromagnetic power measurement and reporting 10 US 9230416 B2 2016-01-05 Communication devices including a sensor configured to detect physical input 11 US 9824552 B2 2017-11-21 Communication devices including an illumination source and a physical input sensor 12 US 10325456 B2 2019-06-18 Communication devices including an illumination source and a physical input sensor 13 US 9001530 B2 2015-04-07 Integrated circuit with voltage conversion 14 US 8861972 B2 2014-10-14 Combination network fiber connector and light pipe 15 US 8837950 B2 2014-09-16 Accessing transceiver link information from host interface 16 US 8687966 B2 2014-04-01 Fiber optic transceiver module with optical diagnostic data output 17 US 8526821 B2 2013-09-03 Transceivers for testing networks and adapting to device changes 18 US 8498541 B2 2013-07-30 Backdoor diagnostic communication to transceiver module 19 US 9172469 B2 2015-10-27 Backdoor diagnostic communication to transceiver module 20 US 8364443 B2 2013-01-29 Fault analysis and monitoring applications using out-of-band based modules 21 US 8290365 B2 2012-10-16 Simulation of optical characteristics of an optical fiber 22 US 8281126 B2 2012-10-02 Out of band encryption 23 US 8254793 B2 2012-08-28 Tuning select fiber optic channels for channel monitoring 24 US 8250246 B2 2012-08-21 Loading and executing firmware module without resetting operation 25 US 8208807 B2 2012-06-26 Transmission of eye information from opto-electronic modules 26 US 8184970 B2 2012-05-22 Optical transceiver with LED link information indicator 27 US 8135282 B2 2012-03-13 Fiberoptic transceiver module with integral status indicators 28 US 8128283 B2 2012-03-06 Temperature measurement apparatus for optoelectronic transceiver 29 US 8251582 B2 2012-08-28 Communications device with integrated case temperature measurement 30 US 8111999 B2 2012-02-07 Inter-transceiver module communication for firmware upgrade 31 US 8582974 B2 2013-11-12 Inter-transceiver module communication for firmware upgrade 32 US 7978982 B2 2011-07-12 Electronic dispersion compensation systems and methods 33 US 7881059 B2 2011-02-01 Heat management in an electronic module 34 US 7832944 B2 2010-11-16 Optoelectronic subassembly with integral thermoelectric cooler driver 35 US 8186892 B2 2012-05-29 Optoelectronic subassembly with integral thermoelectric cooler driver 36 US 7706421 B2 2010-04-27 Temperature sensing device patterned on an electro-optic transducer die 37 US 7701988 B2 2010-04-20 Optical transmit assembly including thermally isolated laser, temperature sensor, and temperature driver 38 US 7630631 B2 2009-12-08 Out-of-band data communication between network transceivers List of US Patents from:
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(Hosking).in. AND (Lucy).in. OR (Hosking).in. AND (Stephen).in. USPAT
Lucy Hosking Resume 831-***-**** *****@**********.*** 39 US 7792425 B2 2010-09-07 Network data transmission and diagnostic methods using out-of-band data 40 US 7620317 B2 2009-11-17 Programmable loss of signal detect hardware and method 41 US 7440647 B2 2008-10-21 Integrated optical assembly 42 US 7418015 B2 2008-08-26 System and method for control of optical transmitter 43 US 7359643 B2 2008-04-15 Optical transceiver module with power integrated circuit 44 US 7346278 B2 2008-03-18 Analog to digital signal conditioning in optoelectronic transceivers 45 US 7302186 B2 2007-11-27 Optical transceiver and host adapter with memory mapped monitoring circuitry 46 US 7269191 B2 2007-09-11 Control circuit for optoelectronic module with integrated temperature control 47 US 7680160 B2 2010-03-16 Control circuit for optoelectronic module with integrated temperature control 48 US 7236507 B2 2007-06-26 Time-based adjustment of temperature control of laser to stabilize wavelengths 49 US 7155133 B2 2006-12-26 Avalanche photodiode controller circuit for fiber optics transceiver 50 US 7217914 B2 2007-05-15 Method for calibrating an optoelectronic device based on APD breakdown voltage 51 US 7149430 B2 2006-12-12 Optoelectronic transceiver having dual access to onboard diagnostics 52 US 7200337 B2 2007-04-03 Optoelectronic transceiver having dual access to onboard diagnostics 53 US 7058099 B2 2006-06-06 Age compensation in optoelectronic modules with integrated temperature control 54 US 7035300 B2 2006-04-25 Calibration of a multi-channel optoelectronic module with integrated temperature control 55 US 7039082 B2 2006-05-02 Calibration of a multi-channel optoelectronic module with integrated temperature control 56 US 6941077 B2 2005-09-06 Memory mapped monitoring circuitry for optoelectronic device 57 US 6952531 B2 2005-10-04 System and method for protecting eye safety during operation of a fiber optic transceiver 58 US 6957021 B2 2005-10-18 Optical transceiver with memory mapped locations 59 US 7050720 B2 2006-05-23 Integrated memory mapped controller circuit for fiber optics transceiver 60 US 7058310 B2 2006-06-06 System and method for protecting eye safety during operation of a fiber optic transceiver 61 US 7079775 B2 2006-07-18 Integrated memory mapped controller circuit for fiber optics transceiver 62 US 7162160 B2 2007-01-09 System and method for protecting eye safety during operation of a fiber optic transceiver 63 US 7184668 B2 2007-02-27 System and method for protecting eye safety during operation of a fiber optic transceiver 64 US 7502564 B2 2009-03-10 Integrated memory mapped controller circuit for fiber optics transceiver 65 US 7529488 B2 2009-05-05 Optical transceiver module with onboard diagnostics accessible via pins 66 US 8086100 B2 2011-12-27 Optoelectronic transceiver with digital diagnostics 67 US 8515284 B2 2013-08-20 Optoelectronic transceiver with multiple flag values for a respective operating condition 68 US 8849123 B2 2014-09-30 Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition 69 US 9184850 B2 2015-11-10 Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition 70 US 9577759 B2 2017-02-21 Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition 71 US 10291324 B2 2019-05-14 Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition 72 US 6912361 B2 2005-06-28 Optical transceiver module with multipurpose internal serial bus 73 US 7580638 B2 2009-08-25 Optical transceiver module with multipurpose internal serial bus 74 US 6852966 B1 2005-02-08 Method and apparatus for compensating a photo-detector 75 US 5826749 A 1998-10-27 Multiplexed system for dispensing multiple chemicals to multiple destinations 76 US 5509788 A 1996-04-23 Flow-metered pumping with load compensation system and method 77 US 5014211 A 1991-05-07 Microprocessor controlled liquid chemical delivery system and method 78 US 4848381 A 1989-07-18 Clean in place system
79 US 4756321 A 1988-07-12 Industrial dishwasher chemical dispenser Lucy Hosking Curriculum Vitae 2025 05 05
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This is a sampler of the various lines of work experience and projects I’ve done for employers, clients, and my own interests. It begins with recent work and proceeds back in time. I hope you find it interesting.
Dan Clark Audio
DCA makes the world’s best headphones using Dan’s proprietary planar transducers. The project was to design a PCB to create a wireless Bluetooth-LE model capable of streaming audio at 96KHz / 24 bit. It used a Qualcomm Bluetooth chip which also contained two CPU cores and two DSP engines among other useful peripherals. This provided an I2S stream to an industry leading DAC from ESS. DCA’s transducers are notoriously difficult to drive, and it was found that none of the sensible small audio power amp ICs were capable of delivering the required performance. This obliged me to design a custom power amp with extraordinarily low distortion and noise, and low quiescent current as the system was powered by a lithium-ion battery.
Suite-E Guitars
Shortly after leaving Finisar, in early 2000, the pandemic struck, and everyone was locked down. An opportunity arose to spend some time doing something I always enjoyed, and that was amenable to working at home. I started a small business where I acquired worthy but slightly flawed guitars and basses and overhauled and hot rodded them. I developed techniques to transform them to be almost magical in the way they could inspire; they seemed to pull the music from the player’s fingers and imagination rather than the player having to coerce the music from the instrument. It paid the bills for a while, but as the pandemic abated, I also took on some freelance metal fabrication and machinist work, then eventually ended up working for Dan Clark.
Finisar Corporation
Frank Levinson, founder & CTO, hired me in 1999, about three hours into what was supposed to be a 45 minute interview. Most of that time was spent explaining Burning Man, and the conceptual process behind my first big art piece, Satan’s Calliope. The Calliope was a control systems thesis which involved nearly everything Frank was looking for someone to do at Finisar (except, of course, for the propane), including using the same microcontrollers Finisar was using at the time.
My first big assignment was to create a new method to obtain live, real time diagnostic information from fiber optic transceivers in a manner that was both easy for customers and palatable to competitors so it would be widely adopted. Lasers deteriorate with age, and used to have reliability issues, so early warning of incipient failure and tracking of gradual degradation was, and remains, a prime concern for large users. Monitoring of network link status has proven vital to running the whole internet at the level of availability and reliability expected by Lucy Hosking Curriculum Vitae 2025 05 05
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everyone, and this was a fundamentally enabling technology to provide that reliability. The industry adopted it almost instantly and versions of the system propagated into all fiber optic telecommunication equipment in use to this day.
The best part of this is that it has generated over $160,000,000 in direct royalty payments to Finisar from their competitors (as of 2019). Less obvious, but equally important, is that it provided leverage for cross-licensing deals which saved Finisar vast sums in royalty payments to competitors.
This project was also a significant part of Finisar’s rise from a small upstart to becoming the dominant supplier of fiber optic transceivers worldwide. The cost of implementation using the available microcontrollers of the day was prohibitive, so we launched a project where I architected a series of custom ICs to implement it. One path was to get a microcontroller company to build a particular set of peripherals with their 8 bit CPU, and the other path was to create a programmable state machine. Our volumes were only a few million / year at the time and the big microcontroller companies weren’t interested, so we shelved that design and built a state machine version through Dallas/Maxim which became the DS1849/DS1852 (and the rest of the DS184X and DS185X series derivatives). Two versions were made: a full transceiver control system for Finisar and a hobbled version with just the monitoring functions for sale to Finisar’s competitors. Quite a few million units and a couple years later, Finisar hired their own IC design team. One of their early mandates was to implement my CPU-based architecture we shelved earlier. Instead of an 8 bit CPU, however, the project resulted in the sweetest dual-core 16 bit RISC CPU I’ve ever worked with. It was blazingly fast (for the time), tiny, and used amazingly little power. It has been integrated into every one of Finisar’s transceiver-on-a-chip IC designs. It has evolved ahead of the complexity of Finisar’s products and the commercial microcontroller market. I give great credit to the digital designer who implemented the gate level design for the CPUs and the surrounding logic.
I also participated heavily in defining the firmware design and coding standards for it. I’ve defined, designed the hardware, and coded all the closed loop control systems for: Laser power servos that cope with the non-linearities and other obnoxious behavior of VCSEL transmitters and their drivers; the detailed temperature compensation and thermal management of the lasers and of avalanche photodiodes used in some receivers; adaptive Electronic Dispersion Compensation equalizers using Least Mean Square, Stochastic Perturbation / Simultaneous Approach, and other coordinate descent algorithms, including dynamic compensation of offsets in the FFE and DFE tap multipliers, summers, and slicers. These products were shipping at 10’s of millions per quarter when I left Finisar, who at the time owned about 25% of the worldwide fiber optic transceiver market. These products set the standard for reliability and performance in that market. All the while this was going on, I also prosecuted a wide range of fiber optic transceiver designs using PIC, MSP-430, and ADuC7xxx controllers focused on high margin specialty Lucy Hosking Curriculum Vitae 2025 05 05
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products. These included, among other things: Dense Wavelength Division Multiplexing designs where one fiber carries many different channels on different wavelengths, much like broadcast radio, and in which the laser temperature must be controlled to 0.001 degrees C or better to maintain wavelength and must be held there for 20 years (of course with aging compensation for the laser). I created the first commercially successful DWDM SFP, and that design was still in production when I left Finisar. Early in my tenure, I had sole responsibility for CPU selection, creation of hardware platform reference designs, firmware, engineering GUI applications, and interface to the production test department. These designs were subsequently evolved and adapted by other teams for their products as the company grew. Many early discrete hardware implementations were absorbed into Finisar’s custom ICs as the IC team expanded and developed new products. As of my departure, most of their products have only one big IC in them and are still using the same methods. I was responsible for shepherding these concepts and methods through the IC team’s evolution and for keeping the institutional memory of these techniques. I initially created Windows GUI applications for each product and platform as my personal tools to develop the firmware and monitor and control the hardware. These proved invaluable for other teams in the R&D lab and Customer Service / Field Applications Engineering, and provided a template for automated production test development. Stripped- down versions were released to customers to assist their evaluation of our products. Starting small, with the DS1849 configuration and monitoring tool, they metastasized into massive product configuration management and tuning systems for each new product I worked on. The early versions were written in VB6, but most were written in C#, taking full advantage of the .NET platform, good Object Oriented methods, multi-threading, and the capabilities of the full Windows Forms model. I evolved methods to create windows quickly and efficiently with hundreds of controls and parameters whose access specifications changed with every new build of the transceiver code. Some of these products had over 5000 configuration items which had to be clearly displayed and managed, and the application had to be responsive and logically arranged to help infrequent and less expert users operate it effectively.
Considerable prior experience with audio mixing consoles and aircraft instrument panels guided the ergonomics of these complex window designs, control layouts, and user interface behaviors.
One of the great gaps in the Digital Optical Monitoring systems discussed above was that a given user may not own both ends of a link and may have no knowledge of the transceiver on the far end. This is not so much a problem inside a data center, where the user owns both ends of most links, but it is a serious issue for all geographically distributed networks and long-haul operations.
I developed a method to create an Out-Of-Band side channel so the transmitting device could send its diagnostic information to the receiver without interacting with the payload data Lucy Hosking Curriculum Vitae 2025 05 05
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stream; each end of the link would exchange its status with the other end, and both users could know the conditions at the far end.
The bandwidth of the optical channels typically rolls off below about 100 KHz. A few percent amplitude modulation on the laser below this frequency has no effect on the payload data. I used Differential Manchester encoding at 5000 Baud to transfer packets of the transmitter’s diagnostic and identity information to the far end. This was easily implemented in firmware by an inner control loop in the laser power servo. Detecting it at the receiver was a bit more difficult. This, too, had to be a strictly firmware design, without any burden to the Bill of Materials cost. The existing analog received signal strength system was used as the source.
The ADC system I designed into our proprietary microcontroller had resources laid in at inception to make this possible. It provided 8X oversampling at the data rate and a variety of DSP operations were performed in firmware to create decent bit error rates. The Random Intensity Noise common in small lasers was a significant problem, but it was overcome with a little DSP.
The data from the far end of the link was presented to the user at the receiver in the same manner as the receiver’s natural diagnostic information, but at different memory locations. Some of Finisar’s newer TIA and Laser Driver ICs had circuitry to facilitate this, including a logarithmic signal strength detector to offload that burden from the firmware, and carefully controlled bandwidth in the received power sensing circuitry to improve Signal to Noise ratio. See US Patent 10,079,644 and its references. Another interesting project at Finisar was a channel monitor for DWDM optical links. This is a small, single-purpose, and very high update rate optical spectrum analyzer. Most optical spectrum analyzers use a diffraction grating and a moving mirror to sweep the spectrum across a single fixed sensor. This used a linear 1024 pixel photodiode array for a sensor and a fixed optical system where each pixel of the array responded to a specific wavelength; it had no moving parts. Sub-pixel resolution was possible with interpolation. The problem was driving the sensor array. It was an analog bucket-brigade shift register with quite insane strobing and gating requirements. I handled this with an Altera FPGA with their Nios processor. The FPGA managed the strobing and all other system and communication I/O, the Nios provided a 32 bit CPU for system intelligence, in the same chip. Patents and Patent Law
I am listed as Inventor on 79 issued U.S. Patents and an unknown number of related foreign patents in Europe and Asia. The great majority of these inventions are principally my work, sometimes with material contributions from other team members who are also listed. In a handful of cases, I made material contributions to work instigated by others. This has generated a disproportionately large return on investment for my employers. Lucy Hosking Curriculum Vitae
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