Multiwavelength arrays of mode-locked lasers for WDM applications

Lawrence J. Davis; Martin G. Young; David J. Dougherty; Sam A. Keo; Richard E. Muller; Paul D. Maker; Siamak Forouhar

doi:10.1117/12.319641

19 August 1998 Multiwavelength arrays of mode-locked lasers for WDM applications

Lawrence J. Davis, Martin G. Young, David J. Dougherty, Sam A. Keo, Richard E. Muller, Paul D. Maker, Siamak Forouhar

Author Affiliations +

Proceedings Volume 3547, Semiconductor Lasers III; (1998) https://doi.org/10.1117/12.319641
Event: Photonics China '98, 1998, Beijing, China

Abstract

The continued need for increased bandwidth is driving the pursuit of both increased speed in TDM and more channels in WDM for fiber optic communication systems. Multiwavelength arrays of monolithic mode-locked DBR lasers are an attractive source for future high bit rate (100 - 800 Gb/s) optical communication systems. Monolithic mode-locked lasers in the colliding-pulse mode-locked configuration have been fabricated, with DBR end mirrors for wavelength selection. A continuous gain region has been employed for ease of fabrication and the elimination of multiple reflections within the cavity. Arrays containing up to 9 wavelengths have been fabricated, with all the wavelengths within the erbium-doped fiber amplifier gain bandwidth. An RF signal is applied to the saturable absorber for synchronization to an external clock and reduction of the phase noise. For a 4.6 mm cavity, short (< 10 ps) optical pulses at high (approximately 18 GHz) repetition rates have been achieved. Low single side-band phase noise values (-107 dBc/Hz 100 kHz offset) have been demonstrated, nearly equal to that of the RF source.

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Lawrence J. Davis, Lawrence J. Davis, Martin G. Young, Martin G. Young, David J. Dougherty, David J. Dougherty, Sam A. Keo, Sam A. Keo, Richard E. Muller, Richard E. Muller, Paul D. Maker, Paul D. Maker, Siamak Forouhar, Siamak Forouhar, "Multiwavelength arrays of mode-locked lasers for WDM applications", Proc. SPIE 3547, Semiconductor Lasers III, (19 August 1998); doi: 10.1117/12.319641; https://doi.org/10.1117/12.319641

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