Translator Disclaimer
2 May 2014 Performance investigation of 112 Gb/s PDM-QPSK long-haul systems employing discrete mode lasers
Author Affiliations +
100-Gb/s coherent systems based on polarization-division multiplexed quadrature phase shift keying (PDMQPSK), with aggregate wavelength-division multiplexed (WDM) capacities approaching 10 Tb/s per fibre, are being widely deployed due to the benefits provided by coherent detection. The stringent linewidth requirements for lasers used in these systems only allow optical sources with certain phase noise characteristics to be employed. A major challenge is therefore to produce lasers with the requisite performance at low cost. Discrete mode laser diodes (DMLDs) can be designed for narrow linewidth emission and present an economic approach with a focus on high volume manufacturability of monolithic semiconductor lasers. In this paper the performance of a 112 Gb/s long-haul optical transmission system employing PDM-QPSK is investigated using a range of transmitter lasers with linewidth values ranging from 100 kHz to 5 MHz. A linewidth of 100 kHz was obtained from an external cavity laser (ECL) and linewidths ranging from 200 kHz to 5 MHz were obtained from DMLDs. The performance of the system is analysed through experimental measurements and simulations performed by Virtual Photonics Incorporated Transmission Maker (VPI™). Results are presented for back-to-back operation and after transmission through G.654 pure silica core fibre (PSCF) at distances up to 6930 km.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John O'Carroll, Vidak Vujicic, Nicolas Brochier, Laurent Bramerie, and Liam P. Barry "Performance investigation of 112 Gb/s PDM-QPSK long-haul systems employing discrete mode lasers", Proc. SPIE 9134, Semiconductor Lasers and Laser Dynamics VI, 91341K (2 May 2014);


Nyquist WDM transmission of 7 x 192 Gb s PDM...
Proceedings of SPIE (February 05 2013)
100 Gb s OFDM OQAM over 100 km transmission based...
Proceedings of SPIE (January 28 2017)
Long-haul 100Gb/s coherent transmission experiments
Proceedings of SPIE (November 11 2008)
Next generation terabit-class transmission systems
Proceedings of SPIE (November 19 2007)

Back to Top