使用可调谐延迟线干涉仪的多格式、多波长掺铒光纤环形激光器

C. Yao, A. Dehnaw, Peng Peng
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引用次数: 0

摘要

这项研究展示了如何利用掺铒光纤放大器(EDFA)、可调谐带通滤波器(TBF)和可调谐延迟线干涉仪(TDLI)组成环形激光器,从而产生多格式、多波长的激光束。TDLI 是拟议激光发生系统的核心。TDLI 利用其内置的 50/50 分光器(BS)(具有不可改变的滤波特性)产生的弱法布里-佩罗(FP)干涉,以及其两个输出端各自产生的自由光谱范围(FSR)可调、相位几乎互补的干涉,叠加产生可变干涉驻波。利用干涉驻波和弱 FP 干涉形成空间孔燃烧,促进多格式和多波长激光器的激发。所提出的系统可实现 0.3 nm 至 3.35 nm 的双波长间距,可切换的波长位置约为 1527 nm 至 1535 nm,提供了灵活的可调谐性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Multi-Format, Multi-Wavelength Erbium-Doped Fiber Ring Laser Using a Tunable Delay Line Interferometer
This work demonstrates the use of an erbium-doped fiber amplifier (EDFA), a tunable bandpass filter (TBF), and a tunable delay line interferometer (TDLI) to form a ring laser that produces multi-format, multi-wavelength laser beams. The TDLI serves as the core of the proposed laser generation system. TDLI harnesses the weak Fabry–Pérot (FP) interferences generated by its built-in 50/50 beamsplitter (BS) with unalterable filtering characteristics and the interferences with free spectral range (FSR) adjustable from each of its two outputs with nearly complementary phases to superpose and generate a variable interference standing wave. The interferometric standing wave and weak FP interferences are used to form a spatial-hole burning to promote the excitation of multi-format and multi-wavelength lasers. The proposed system enables dual-wavelength spacing ranging from 0.3 nm to 3.35 nm, with a switchable wavelength position at approximately 1527 nm to 1535 nm, providing flexible tunability.
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