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40Gbit/s photonic IC hits volume production

40Gbit/s photonic IC hits volume production

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By eeNews Europe



The NeoPhotonics demodulator product is designed for use in 40Gbit/s direct detection Differential Quaternary Phase Shift Key (DQPSK) data transmission. 

DQPSK systems utilise Delay-Line Interferometers (DLIs) to coherently mix the incoming signal with a delayed sample, thereby avoiding the need for, and cost of, an external local optical reference laser. 

The NeoPhotonics DQPSK demodulator integrates two DLIs on a single photonic chip and provides in-phase and quadrature analysis of the phase-encoded signal. 

To accommodate the unpredictable and varying nature of the received signals, the DQPSK demodulator is designed to exhibit low sensitivity to polarization variations.

NeoPhotonics introduced the small form factor version of this product in the fourth quarter of 2010 and achieved general availability in the first quarter of 2011.

NeoPhotonics also offers a PIC-based standard form factor DQPSK Demodulator for 40Gbps transmission systems and PIC-based Intradyne Coherent Receivers (ICR) and 90° Hybrid Coherent Mixers for both 40Gbps and 100 Gbps coherent transmission systems. 

For more information, visit www.neophotonics.com

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