Integrated Gain Switched Comb Source for 100 Gb/s WDM-SSB-DD-OFDM System

Abstract

We demonstrate a 100 Gb/s short reach system using a multicarrier transmitter based on a gain switched monolithically integrated laser. An optical comb source with 12.5-GHz free spectral range is achieved by gain-switching an integrated passive feedback laser. The 100 Gb/s wavelength division multiplexed, single sideband, direct detection, orthogonal frequency division multiplexed (WDM-SSB-DD-OFDM) system operates over 25 km standard single mode fiber exhibiting a spectral efficiency of 1.8 b/s/Hz. Receiver sensitivity of -14.2 dBm is achieved after 25 km transmission. Performance optimization with phase and amplitude precompensation is employed to improve the SSB OFDM modulation thereby reducing the interchannel interference and overcoming the power fading induced by the optical filter. We also present a theoretical analysis of the SSB-OFDM modulation. Index Terms-Integrated passive feedback laser (PFL), optical comb source, orthogonal frequency division multiplexing (OFDM), short reach, single sideband (SSB).0733-8724 © 2015 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.See http://www.ieee.org/publications standards/publications/rights/index.html for more information. Liam P. Barry (M'98-SM'10) received the B.E. degree in electronic engineering and the M. Eng.Sc. degree in optical communications from University College Dublin, Dublin, Ireland, in 1991 and 1993, respectively, and the Ph.D.

Enhanced optical frequency comb generation by pulsed gain-switching of optically injected semiconductor lasers

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Optical Frequency Comb Expansion Using Mutually Injection-Locked Gain-Switched Lasers

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