Single-Longitude-Mode Fiber Laser Implementation by Using Only Two Subring Cavities in Serial/Parallel Connection |
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| Authors: | Hsin-Che Lee Yin-Wen Lee Jiun-Shin Chang |
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| Affiliation: | 1. Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan;2. Department of Electro-optical Engineering, National Taipei University of Technology, Taipei, Taiwan |
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| Abstract: | ABSTRACTBy incorporating double-ring cavities and a piece of un-pumped Er3+-doped fiber (EDF) as a saturable absorber, we report a single-longitude-mode EDF fiber laser at C-band. The single-longitude-mode is obtained, the first time, by inserting only two subring cavities in either serial connection or parallel connection. The fiber laser has an optical signal-to-noise-ratio of 34.5 dB and a maximum power fluctuation of less than 1.3% for 1-hr operation. It was then modulated up to 10 Gbit/s by using an electro-optic modulator for eye diagrams, compared to back-to-back transmission. Such a compact and low-cost fiber laser is potential for high-speed optical communication. |
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| Keywords: | Linear cavity single-frequency fiber Bragg grating side mode suppression ratio slope efficiency eye diagram |
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