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Giant Pulse Phenomena in a High Gain Erbium Doped Fiber Amplifier

机译:高增益掺Do光纤放大器中的巨脉冲现象

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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:高增益掺Do光纤放大器(EDFA)在革新光通信的同时,在不播种(例如种子)的情况下仍然容易受到光损坏。由于非线性效应,由于自发的Q切换,会产生具有高峰值功率的随机脉冲,即大脉冲。巨大的脉冲会损坏高增益EDFA内的组件或耦合到EDFA的外部组件和系统。我们探讨了反射,偏振保持(PM),抽芯高增益EDFA产生巨脉冲的条件,提供了正常脉冲演变成巨脉冲的条件的详细信息,并提供了有关巨脉冲对瞬态影响的结果。放大器的熔融光纤耦合器,例如结合波分复用器(WDM)的泵浦信号,这种效应我们称为熔融耦合器过载感应泄漏(FOIL)。尽管FOIL对熔融光纤耦合器的影响是暂时的,但它对高增益EDFA中的前向泵浦激光器的损害可能是永久性的,例如损坏泵的前端面。

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