Harmonic Injection-Locking Behavior of Frequency-Detuned Optical Pulse in Erbium-Doped Fiber Laser

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概要

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• The harmonic injection-locking dynamics of a gain-switched laser diode (GSLD) pulse-injection-locked Erbium-doped fiber amplifier-based laser (EDFL) are studied. Under GSLD injection with a pulsewidth and an average power of 17.6 ps and 0.2 mW, respectively, at a repetition frequency corresponding to the 223rd harmonic (996.8635971 MHz) of the EDFL, the pulsewidth, peak power, and phase noise of the injection-locked EDFL are broadening from 34.3 ps to 130 ps, decreasing from 1.8 W to 500 mW, and increasing from $-101.5$ dBc/Hz to $-86$ dBc/Hz, respectively, as the repetition frequency detunes toward the injection-locking margin. The injection-locking range is from $-13$ kHz to $+27$ kHz. The peak power of the broadened pulses is greatly reduced to one third of that at the zero-detuning condition even with a detuning frequency of $\pm 5$ kHz. The injection-locked EDFL pulse-train eventually disappears as the repetition frequency of the GSLD detuned beyond the injection-locking bandwidth. The timing jitter of the GSLD harmonic injection-locked EDFL remains unchanged (${<}0.5$ ps) within a positive detuning frequency of ${<}25$ kHz, which is less stable at a negatively frequency-detuned regime.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2004-08-15

著者

• Lin Gong-ru

  Institute Of Electro-optic Engineering Naional Chiao Tung University

• Wu Jung-rung

  Institute Of Electro-optical Engineering National Chiao Tung University

• Lin Gong-Ru

  Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 Ta Hsueh Rd., Hsinchu, Taiwan 300, R.O.C.

• Liao Yu-Sheng

  Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 Ta Hsueh Rd., Hsinchu, Taiwan 300, R.O.C.

• Wu Jung-Rung

  Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 Ta Hsueh Rd., Hsinchu, Taiwan 300, R.O.C.

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