Langevin Treatment of Atomic Coherence Effect on Hybrid Erbium-doped Fiber Amplification

LIU Fangxin; GUO Yang; MING Hai

Chinese Journal of Lasers B, 1999, 8 (6): 538, 网络出版: 2006-08-08

Langevin Treatment of Atomic Coherence Effect on Hybrid Erbium-doped Fiber Amplification

LIU Fangxin ^1,2GUO Yang ³MING Hai ³

作者单位

¹ Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China

² Department of Astronomy and Applied Physics, University of Science and Technology of China, Hefei 230026, China

³ Department of Physics, University of Science and Technology of China, Hefei 230026, China

atomic coherence hybrid erbium doped fiber amplifier LD pump

摘要

Abstract

The effects of atomic coherence on hybrid erbium-doped fiber amplifier (HEDFA) pumped simultaneously by two diode lasers with different frequencies are studied by using Langevin quantum theory. The expressions of coherence and incoherence gain are derived. The theoretical results show that HEDFA has a near flat bandwidth response from 1531 to 1568 nm and large coherence gain under the conditions of low temperature and small detuning.

PDF全文

LIU Fangxin, GUO Yang, MING Hai. Langevin Treatment of Atomic Coherence Effect on Hybrid Erbium-doped Fiber Amplification[J]. Chinese Journal of Lasers B, 1999, 8(6): 538. LIU Fangxin, GUO Yang, MING Hai. Langevin Treatment of Atomic Coherence Effect on Hybrid Erbium-doped Fiber Amplification[J]. 中国激光(英文版), 1999, 8(6): 538.

Langevin Treatment of Atomic Coherence Effect on Hybrid Erbium-doped Fiber Amplification

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