Waveband-switchable SOA ring laser constructed with a phase modulator loop mirror filter |
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Authors: | M.P. Fok K.L. Lee C. Shu |
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Affiliation: | Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, China; |
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Abstract: | An electrically tunable multiwavelength source has been developed using a birefringence-based optical comb filter in a semiconductor optical amplifier ring laser. The filter is constructed with an electrooptic phase modulator placed inside a fiber loop mirror. By controlling the birefringence of the modulator through the applied bias, the radio-frequency power, or the modulation frequency, we achieve a continuous shift of the spectral comb to access different interleaved wavebands. Electrical waveband switching has been successfully demonstrated for 21 wavelengths at 100-GHz grid spacing with an optical signal-to-noise ratio over 40 dB. |
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