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NeoPhotonics Shows InP Components Capable Of 120Gbaud

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Presentations at OFC describe developments that enable 800G+ performance in hyperscale data centre and telecom networks

NeoPhotonics, a developer of silicon photonics and photonic integrated circuit-based lasers, modules and subsystems, has used its InP based coherent eeceiver and coherent modulators, coupled with its ultra-narrow linewidth tunable lasers or DFBs to demonstrate 120Gbaud operation in applications ranging from 800G LR transmission to 400G long haul transmission.

Using its InP based coherent driver modulator (CDM) and intradyne coherent receiver (ICR) with more than 60GHz-bandwidth, NeoPhotonics has experimentally demonstrated the feasibility of the following transmission systems at 120+ Gbaud:

- Long-haul: 400Gb/s over 1500km standard single-mode fiber EDFA-only transmission system with a superior required OSNR of 16.7dB at OFEC threshold;

- Regional/Metro-core: 800Gb/s (with probabilistic shaping) over 1000km standard single-mode fiber EDFA-only transmission system with a superior required OSNR of 24.3dB at OFEC threshold;

- ZR DCI: 800ZR over a single-span EDFA-based 100km standard single-mode fiber with a superior required OSNR of 25dB at OFEC threshold and a transmitter output power of -6dBm; and

- Unamplified LR: 800LR over an unamplified 10km link with a 9dB link budget, and 800Gb/s “coherent lite” over an unamplified 1km link with a budget of 5.2dB, both using a low-latency FEC with a BER threshold at 4 x 10-3. The latter used self-homodyne coherent detection so as to significantly simplify the DSP and remove wavelength locking between transmitter and local oscillator.

“We are pleased to take this opportunity to highlight the progress we have made in pushing our high-performance indium phosphide integration technologies to even higher speeds and over longer distances to enable new potential applications in cloud and data center applications,” said Tim Jenks, Chairman and CEO of NeoPhotonics. “These 120Gbaud components coupled with our ultra-narrow linewidth external cavity “nano” tunable laser or our distributed feedback lasers, along with concurrent DSP advances, could enable pluggable modules to operate at 800G for applications within and between datacenters, as well as to extend the speed and reach of embedded telecom systems,” concluded Mr. Jenks.

Aspects of these demonstrations will be discussed in the following presentations at the Optical Fiber Communications Conference and Exhibition, San Diego, California, March 8-10, 2022:

You-Wei Chen, NeoPhotonics, USA, 'Intra-Data Center 120Gbaud/DP-16QAM Self-Homodyne Coherent Links With Simplified Coherent DSP',

Marcel Boudreau, NeoPhotonics, USA, 'Laser and Gain Sources for Highly Integrated Photonic Circuits', Panel: Progress and Roadmap in Silicon Photonics Foundries and Supply Chains.

Winston Way, CTO, NeoPhotonics, USA, 'From Long-Haul to Intra-Data Center: Coherent Transceiver's Spectacular Journey', Market Watch Panel: Evolution of Coherent Transceiver Architectures for Specific Applications

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