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Giant Pulse Phenomena in a High Gain Erbium Doped Fiber Amplifier

机译:高增益掺铒光纤放大器中的巨型脉冲现象

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High gain Erbium Doped Fiber Amplifiers (EDFAs), while revolutionizing optical communications, remain vulnerable to optical damage when unseeded, e.g. due to nonlinear effects that, due to spontaneous Q switching, produce random pulses with high peak power, i.e. giant pulses. Giant pulses can damage either the components within a high gain EDFA or the external components and systems coupled to the EDFA. We explore the conditions under which a reflective, polarization-maintaining (PM), core-pumped high gain EDFA generates giant pulses, provide details on conditions under which normal pulses evolve into giant pulses, and provide results on the transient effects of giant pulses on an amplifier's fused-fiber couplers, such as pump-signal combining wavelength division multiplexers (WDMs), an effect which we call Fused-coupler Overload Induced Leakage (FOIL). While FOIL's effect on fused-fiber couplers is temporary, its damage to forward pump lasers in a high gain EDFA can be permanent, e.g. damage to the pump's front facet.
机译:高增益铒掺杂光纤放大器(EDFAS),同时旋转光学通信,在无奈时仍然容易受到光学损坏的影响,例如,由于非线性效应,由于自发性Q切换,产生具有高峰功率的随机脉冲,即巨大脉冲。巨大脉冲可能会损坏高增益EDFA或耦合到EDFA的外部元件和系统的组件。我们探讨了反射,偏振保持(PM),核心泵浦的高增益EDFA产生巨型脉冲的条件,提供有关普通脉冲进化到巨脉冲的条件的细节,并提供巨型脉冲的瞬态效应的结果放大器的融合光纤耦合器,例如泵信号组合波分复用器(WDMS),我们称之为融合耦合器过载引起的泄漏(箔)的效果。虽然箔对融合光纤耦合器的影响是暂时的,但它对高增益EDFA的前进泵激光器的损坏可以是永久性的,例如,泵的前方损坏。

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