Resistance to external optical feedback of low-chirp strained-quantum-well complex-coupled distributed-feedback laser

被引：0
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作者：
Wang, Chi-Yu [1 ]
Chuang, Zuon-Min [1 ]
Liao, H.H. [1 ]
Lin, Wei [1 ]
Tu, Yuan-Kuang [1 ]
Lee, Ching-Ting [1 ]
机构：
[1] Chunghwa Telecom Co, Ltd, Taoyuan, Taiwan
来源：
Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes & Review Papers | 1997年 / 36卷 / 5 A期
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摘要：
Resistance to the optical feedback of complex-coupled DFB lasers with current blocking grating was studied experimentally. The measured relative intensity noise of the lasers was as low as -160 dB/Hz even in the presence of an external feedback level of -15 dB. The modulation chirping of the device was quite small with a linewidth enhancement factor a of 1.9 measured using a fiber-response peaks method. A transmission experiment was performed over a 235 Km standard nondispersion-shifted fiber at 2.488 Gbps by direct modulation without using an optical isolator, and the power penalty was only 1.55 dB at a bit error rate of 10-12.
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页码：2685 / 2688
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