A multiwavelength switching laser is demonstrated by a precise and fast tuning of a composite Lyot-Sagnac comb filter based on multisegment polarization-maintaining fibers. Broadband multiwavelength output is generated by cascaded Raman Stokes waves between 1.12 and 1.58 μm in a fiber-ring cavity with a wave-division-multiplexed coupler. Theoretical and experimental analysis of stable multiwavelength output operation for various Raman gain fibers and the electro-optic switching and flexible space tuning of interleaved wavebands are performed.
© 2004 Optical Society of America
(060.2330) Fiber optics and optical communications : Fiber optics communications
(120.5790) Instrumentation, measurement, and metrology : Sagnac effect
(140.3550) Lasers and laser optics : Lasers, Raman
(350.2460) Other areas of optics : Filters, interference
Chang-Seok Kim and Jin U. Kang, "Multiwavelength Switching of Raman Fiber Ring Laser Incorporating Composite Polarization-Maintaining Fiber Lyot-Sagnac Filter," Appl. Opt. 43, 3151-3157 (2004)