Progress toward 100-G digital coherent pluggables using InP-based photonics

Wladek Forysiak, Donald Scott Govan

Research output: Contribution to journalArticlepeer-review


A new generation of high-capacity WDM systems with extremely robust performance has been enabled by coherent transmission and digital signal processing. To facilitate widespread deployment of this technology, particularly in the metro space, new photonic components and subsystems are being developed to support cost-effective, compact, and scalable transceivers. We briefly review the recent progress in InP-based photonic components, and report numerical simulation results of an InP-based transceiver comprising a dual-polarization I/Q modulator and a commercial DSP ASIC. Predicted performance penalties due to the nonlinear response, lower bandwidth, and finite extinction ratio of these transceivers are less than 1 and 2 dB for 100-G PM-QPSK and 200-G PM-16QAM, respectively. Using the well-established Gaussian-Noise model, estimated system reach of 100-G PM-QPSK is greater than 600 km for typical ROADM-based metro-regional systems with internode losses up to 20 dB.

Original languageEnglish
Pages (from-to)2925-2934
Number of pages10
JournalJournal of Lightwave Technology
Issue number16
Early online date9 Jun 2014
Publication statusPublished - 15 Aug 2014


  • integrated optoelectronics
  • optical fiber communications
  • optical transmitters
  • phase modulation


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