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Optica Publishing Group
  • CLEO/Europe and IQEC 2007 Conference Digest
  • (Optica Publishing Group, 2007),
  • paper IG_11

Semiconductor lasers under orthogonal frequency-dependent optical feedback: experiments and theory

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Abstract

Semiconductor lasers are key elements of today's optical communications technology and have immense importance in consumer electronics, being used in CD and DVD players, printers, scanners, etc. Under external perturbations, such as optical feedback, optical injection and modulation, these lasers often present instabilities in their optical output. Recently, Oria and co-workers [1] studied the influence of frequency-selective orthogonal, polarization-rotated feedback, placing a frequency-sensitive filter (Cs-vapor cell) in the way of the feedback beam to spectrally modulate the feedback power. The experimental setup is displayed in Fig. 1. Two different emission frequencies with almost the same output power were observed (less than 1% amplitude modulation was observed). This frequency bistability can have potential applications for all-optical logic gates and optical digital information technologies.

© 2007 IEEE

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