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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2002),
  • paper CWA48

Reduction of Mode Partition Noise in a Multiwavelength Semiconductor Laser through Hybrid Modelocking

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Abstract

The longitudinal modes of a multimode laser diode suffer from intensity fluctuations that, when coupled with spectral filtering, result in mode partition noise (MPN).1,2 We have significantly decreased the MPN in a modelocked, multiwavelength semiconductor laser. Our method exploits the saturable nonlinearity in a multiple- quantum-well (MQW) saturable absorber, along with high speed gain modulation, to establish hybrid modelocking in an external cavity semiconductor diode laser. The result is an error-free optical pulse train in each of the wavelength channels generated by the multiwavelength laser.

© 2002 Optical Society of America

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