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Lead Engineer Resume

Linthicum, MarylanD

SUMMARY:

  • Over 14 years of experiences, including four years of management experiences, in the design, development, and testing of cutting edge (100G and above) optical communication systems;
  • An expert on the design, planning, and modeling tools for optical communication systems;
  • Extensive experiences in supporting customers on optical network design and deployment;
  • Deep understanding of DWDM, ROADM, OTN/SDH/SONET, and Carrier Ethernet networks;
  • Both an excellent individual contributor and a team leader.

WORK EXPERIENCE:

Lead Engineer

Confidential, Linthicum, Maryland

Responsibilities:

  • Cover all Confidential /Nortel transport product lines: 10G/40G/100G/200G WaveLogic, 10G XFP, 2.5G SFP, OME 6500, CPL, OME 5000, CN4200, CoreStream, CoreDirector, and 5400;
  • Develop models for electrical and optical components in the most advanced optical transmitters and receivers, including lasers, drivers, modulators, detectors, and the generated signal waveforms;
  • Develop models for the latest optical components in optical fiber communication systems, including optical fibers, optical amplifiers, various optical filters, WSS, and DCMs;
  • Develop digital signal processing algorithms for the most advanced Dual - Polarization QPSK/BPSK/16QAM signals in the 40G/100G/200G coherent optical communication systems;
  • Develop models for the system control algorithms in the communication systems, including power and optical SNR control along the system, and power equalization across the spectrum;
  • Simulate the signal performances in optical fiber transmission with the accurate Split Step Fourier method and the simplified semi-analytical models;
  • Develop algorithms for automatic placement of equipment in optical systems and networks;
  • Models developed in Matlab and C/C++;
  • Automatic polarization mode dispersion (PMD) compensator and polarization tracker for the 100G dual-polarization RZ DQPSK system:
  • Invented the configurations and selected error signals for the PMDC and polarization tracker;
  • Developed and tested the driving circuit and control algorithms for polarization controllers;
  • Algorithm prototypes written in C and implemented in the circuit board as embedded software;
  • The inventions enabled the first commercial 100G optical system in the industry.
  • Optical performance monitor and dynamic gain equalizer (OPM/DGE) for ultra long haul optical systems:
  • Invented the configuration of distributed optical power control systems for ultra long haul optical communication systems with the latest optical component technologies;
  • Developed and tested the control algorithms to dynamically equalize the optical amplifier gains based on monitored power levels in the system;
  • Algorithms written in C and implemented in the circuit board as embedded software;
  • It was also the first commercially deployed OPM/DGE subsystem in the industry.

Confidential

Principal Engineer

Responsibilities:

  • Answered major RFPs/RFIs of optical communication system and network designs. Be responsible for link budget designs.
  • Investigated issues in customers’ systems and made special designs or fixes for them;
  • Provide technique support for SEs and customers;
  • Developed a cross-layer traffic grooming algorithm for optical networks with hybrid layer-one and layer-zero signal regeneration;
  • Developed impairment-aware wavelength assignment, routing, and regenerator placement algorithms in non-uniform optical mesh networks;
  • Developed a node hardware module planning algorithms for node/shelf/card structure design for photonic and OTN networks;

R&D Engineer

Confidential

Responsibilities:

  • An automatic loading and unloading system for component testing in mass production environment;
  • An automatic test procedure for driving, detecting, and evaluating the components with various test equipments such as power meter and optical spectrum analyzer;
  • Test program written in C/C++.
  • Data acquisition and equipment control program written in LabView.

Research Fellow

Confidential

Responsibilities:

  • Investigated the design and fabrication of fiber Bragg gratings.
  • Multiple Confidential was written in a single fiber through precise control the locations of multiple phase masks.
  • Proposed novel OADM structures based on Confidential and optical circulators for optical networks.

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