Job description

Acacia’s optical systems group is looking for an expert in optical communications with great lab skills and interest in the hands?on development of our ultra-high speed coherent transceivers.

Acacia, now part of Cisco, provides innovative silicon-based high speed optical interconnect products to accelerate network scalability through advancements in performance, capacity, and cost. Our DSP ASICs, silicon photonic PICs and coherent modules empower cloud and service providers to meet the fast-growing demand for data. We have assembled a team of cross?functional experts capable of solving the challenges of next generation optical interconnects, resulting in industry-leading, award-winning products.

Come join us at Cisco, named the #1 world’s best workplaces, and do purposeful work that makes a global impact and gives back to a company culture that empowers an inclusive future for all. Why You’ll Love Cisco We change the World, you will become passionate about your employer and the brand you represent. Everything is converging on the Internet, making networked connections more meaningful than ever before in our lives. Our employees' groundbreaking ideas impact everything. Here, that means we take creative ideas from the drawing board to dynamic solutions that have real world impact.

You'll collaborate with Cisco leaders, partner with mentors, and develop incredible relationships with colleagues who share your interest in connecting the unconnected. You'll be part a team that cares about its customers, enjoys having fun, and you'll take part in changing the lives of those in our local communities. Come prepared to be encouraged and inspired.

What You'll Do:
Your primary responsibilities will include transceiver bring-up, development of calibration procedures used in engineering and manufacturing, debugging and production yield improvement, performance optimization involving optics, high speed electronics and Acacia’s sophisticated DSP ASICs, as well as the final design verification testing (DVT) of our products. Depending on your interest and experience, you may also own or participate in design of subsystems providing e.g. performance monitoring functionality or optical amplification, or contribute to our digital signal processing development. You will work closely with our colleagues in the HW, SW, DSP, Silicon Photonics, and Operations groups providing a phenomenal opportunity to gain a lot of knowledge in multiple areas. Other responsibilities include:

Improving performance optimization, and design verification testing of coherent transceivers

Designing subsystems such as optical amplifiers and modulator control loops, and/or contribute to our digital signal processing development

Optimize DSP parameter of ASIC designed for the most advanced coherent optical communications

Collaborate with photonics integrated circuit team to produce the most compact pluggable coherent optical modules

Design and implement coherent optical modules

Advise on efforts of evaluation of fiber nonlinear penalty in the transmission systems and its mitigation method

Provide accurate and cost-effective calibration of coherent transceivers and its transfer to Operations

Drive debugging activities to improve product yield and to shorten time to successful field deployment

Collaborate with colleagues in the HW, SW, DSP, and Operations groups Who You Are

Candidates with a Masters or PhD in physics or electrical engineering would be ideal for this role

Experience with measurements, concepts, and equipment for characterization of optical communications systems such as: BER measurements, WDM transmission measurements, OSNR, dispersion, PMD, optical spectrum analyzers, and real-time and sampling oscilloscopes

Hands on experience with bring-up, debugging, calibration, and design verification testing of (coherent) transceiver line cards or modules

A solid understanding of transceiver HW, FW, and SW

Deep understanding on optical amplifier and dense wavelength division multiplexing (DWDM) systems/networks

Ability to construct and run optical recirculating loop test bed

Full automation of test equipment and coherent transceivers

Proven knowledge on coherent transmitter/receiver architecture, QAM modulation, coherent reception, digital signal processing, RF electronics such as oscillators and high-speed amplifiers, and lab automation

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