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An all fibre, widely tunable, single frequency, semiconductor ring laser was constructed with a narrow linewidth of 35 kHz. Tuning over 50 nm was electronically obtained using a fibre Fabry-Perot filter as a selected wavelength element. Single-frequency operation was demonstrated with sidemode suppression higher than 35 dB.
Inspec keywords: ring lasers; optical fibres; laser tuning; semiconductor lasers
Other keywords:
Subjects: Semiconductor lasers; Laser beam modulation, pulsing and switching; mode locking and tuning; Lasing action in semiconductors; Design of specific laser systems