Incorporation of a fiber Bragg grating to improve the efficiency of a 1580-nm-band tunable fiber ring laser.
An efficient and tunable 1580-nm-band erbium-doped fiber ring laser is achieved by injection of amplified spontaneous emission in a conventional band by a fiber Bragg grating into the gain medium. The insertion of the fiber Bragg grating reduces the lasing threshold to 25%. The tuning range is 1560-1610 nm; the side-mode suppression ratio is better than 65 dB.
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Choi
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Lee
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Ahn
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