Optical Engineer

RAMYAA RAMESH SANGAM

*** ******* *****, ******, **** 45419

Phone No: 937-***-****, E mail: *********@*****.***

OBJECTIVE

To work in the field of Optical/Electrical Engineering/Software Life Cycle, with an emphasis on Optical

Design, and to contribute to the growth of the organization.

SUMMARY

Dynamic, hardworking and self motivated Optical Engineer with 3 years of experience in designing optical

systems. Experience working with fiber coupling, aligning optical systems, interferometers, intelligent fiber

optic collimators (fiber positioners), modeling physical optics in C++ and deformable mirrors. Ability to do

optical design, tolerance analysis, Opto mechanical design. Pleasant to work with, smart, helpful and team

oriented with effective communication and presentation skills. Quick learner, ability to analyze and solve

problems in a logical manner. .Good knowledge in C++, SQL Server 2005, Python, Unix Scripts .

EDUCATION

University of Dayton, Dayton, OH

Masters in Electrical Engineering (with specialization in Electro Optics), May 2013

Anna University, Chennai, India

Bachelors in Electronics and Communication, June 2009

WORK EXPERIENCE

Research Assistant, Intelligent Optics Laboratory, Optonicus, May 2010 Present

Thesis: Characterization And Study Of Polychromatic Beacon

Designed an optical system to couple three wavelengths(1550, 1064 and 532nm respectively) into a

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photonic crystal fiber to get it into a beacon. This project was developed to characterize and study

the impact of atmospheric turbulence over long propagation path of 150km.

Designed achromatic lenses for each of the above wavelengths and worked with Opto mechanical

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parts to mount the whole system on a breadboard.

Performed Opto mechanical design on the Infoco controller to make it compact and light weight.

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Designed different kinds of lenses such as Double Gauss, Petzval, Cooke Triplet, Rapid Rectilinear

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lenses, Achromats etc during coursework and used some of these designs for my project.

Designed an Infrared lens(with a wavelength ranging from 8 14µm), a focal length of 50mm, an f

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number of 1.67 with a field of view of 10 degrees as part of my coursework.

Performed Tolerance analysis in Zemax to measure the sensitivity of the design.

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Worked with ESDI interferometer to test the achromatic lenses and measure the aberrations.

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Performed experiments to couple each of the wavelengths individually and simultaneously into the

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photonic crystal fiber.

Worked with INFOCO controllers (Intelligent Fiber Optics Collimator) to adaptively align the

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whole system and couple all the three wavelengths into the photonic crystal fiber simultaneously.

This project also has other applications such as Opthalmoscopy (Imaging the retina and confocal

microscopy).

Designed LED’s (Light Emitting diodes) with an aspheric lens in front with a plastic reflector

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around it to have uniform illumination on the detector surface as part of coursework.

Designed an Apochromat optimized for finite/infinite conjugates with these three wavelengths

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(1550, 1064, 532 nm), a focal length of 150mm and an f number of 5.0 to collimate the beams for

long range propagation.

As part of the project, to put the beacon together, I aligned an Off axis Parabolic mirror with the

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collimator setup with the Photonic Crystal fiber. This was done using an Interferometer to align the

mirror. This was one of the final stages of the project (to get the light into the beacon).

Presented and discussed ideas about using the current setup of my project for confocal microscopy

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applications.

Tested and modified a 31 electrode Multi Actuator Deformable mirror using the Interferometer to

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measure the mirror’s surface quality which was a product of Optonicus for the Photonics West

exhibition held at San Francisco. A circuit had to be built to connect the voltages to the mirror.

Helped setup and align APPLE(Adaptive Photonics Phase Locked Elements) system, high power

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fiber array collimators with adaptive wavefront control built in them, to pre compensate turbulence

induced phase aberrations.

Used Shack Hartmann Wave front sensor to test a few lenses.

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Theoretical knowledge of mode propagation in waveguide and free space application.

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Written periodic reports and proposals for the project.

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Cleaved, spliced fibers and made fiber patch chords.

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Was offered a job at HP as an undergraduate, but chose to pursue a Master's Degree education.

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PHYSICAL OPTICS MODELING

Using C++, computed phase and intensity propagation for grey scale images, phase branch points

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and total and hidden wave front phase.

Performed numerical simulation for free space propagation of a Gaussian beam, calculated its long

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and short exposure beam size and beam wander.

Studied and performed numerical simulation of optical wave propagation from the target to the

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telescope pupil for an imaging telescope, calculated the impact of phase screen location on coherent

image degradation in a set of images for a telescope and the impact of surface roughness on

coherent image quality.

Calculated and computed the Amplitude Transfer function and Optical Transfer function for

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incoherent imaging systems and the impact of thin phase screens for these systems.

Studied wave front control principles and algorithms and simulated some of them such as phase

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conjugate type wave front control for an infinite flat mirror, circular flat mirror and the presence of

phase screens present in its pupil plane.

IN PLANT TRAINING

SAMEER, CENTRE FOR ELECTROMAGNETICS, Chennai, India, May 2008 July 2008

(Society for Applied Microwave Electronic Engineering and Research Center for Electromagnetics)

• Underwent training on the following subjects:

i) EMI/EMC (Electromagnetic Interference/Compatibility) standards and measurement

techniques.

ii) EMC (Electromagnetic Compatibility) design issues for Electronic systems.

The objective of this training was to give a good level of National and International Standards used

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for qualifying Electronic gadgets for interference free performance and basic know how on design

issues of such systems by Electromagnetically compatible techniques.

During my training, I worked on a project called “Analytical and Experimental Studies of

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Electromagnetic Radiation from Printed Circuit Board traces using Finite Element Analysis and

Neural Networks” where I analyzed and rectified a PCB related emission problem in its early

design stages which saved cost and time. I used Finite Element Analysis and Neural Network (using

Matlab) to classify and train the image pattern.

OTHER EXPERIENCE

During under graduation, I presented a paper at a conference in Hyderabad, India called Sense of

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Sight, which described a simple and economical solution to satisfy some basic needs of the visually

challenged, in order to make them more independent. I developed this idea with the theories of

robotics to help them access any book and also translate arbitrary video images from a camera into

sound. The proposal also included the use of GPS (Global Positioning Systems) that helps point out

their location at any instant. I won the 1st prize for this paper at the conference.

Presented another paper called Computerized level Automated Crossing, where I designed a new

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system using RFID (Radio Frequency Identification), embedded systems, and various

communication techniques to prevent railway accidents at unmanned railway crossings, which is a

constant problem at Indian railways. Won the 2nd prize at the conference held in Hyderabad.

I enjoy participating in adventure sports and playing logic games (such as Set, Playing cards,

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Monopoly, Scrabble and Carrom Board). I enjoy reading the NYT and WSJ articles (I like to be

up to date on current affairs), autobiographies, philosophy and history books.

TECHNICAL SKILLS

Worked with Zemax, MATLAB and OSLO.

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Studied and worked with Stochastic Parallel Gradient Descent (SPGD) algorithm, which is an

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algorithm to control the piezo driven fiber positioners.

Worked with C++,SQL Server 2005, VERILOG, PSPICE, Python, Unix and assembly language

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programming for microprocessors as part of coursework..

Comfortable with CORELDRAW to draw designs for power point presentations.

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Familiar with SolidEdge program CAD program.

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Work with MS office package on a day to day basis.

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Maintained Lab Database using SQL Server 2005 .

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ADDITIONAL SKILLS

Soldered electrical connectors, various electronics, made cables connecting the INFOCO controller

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to the fiber positioner.

Designed various electrical circuits such as oscillators, CMOS, CFET transistors etc using PSPICE

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during under graduation.

Know how to use basic electronic equipment such as digital multi meter, Volt/ohm meter,

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Oscilloscope, High voltage meter, Fiber Optic meter etc.

Familiar with the theory of amplifiers, optical Multiplexers/Demultiplexers as part of coursework.

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Edited manuals for the INFOCO controller and fiber positioners, making it more customer friendly.

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Documented mechanisms for Fiber Coupling into the Photonic crystal fiber which required course

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and fine alignments and measured the output with a Fiber Optic meter during the preliminary tests.

Worked in the machine shop of the lab and modified the breadboard with the beacon on it, so that it

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could fit on a Gimbal which was the final goal of the project.

RELEVANT COURSEWORK

Optical Design, Wavefront Control in Optics, Geometric Optics, Electro Optic Devices and Systems, Image

Processing, Linear System Analysis, Introduction to Digital Systems, Probability and Random Processes.

Optical Setup (Preliminary)

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