同步波长扫描信号传输及其避免光反射串扰的能力
Synchronized Wavelength-Swept Signal Transmission and its Ability to Evade Optical Reflection Crosstalk
摘要：
相干零差检测需要发射器和接收器处的本地振荡器之间的发射波长的精确匹配。注入锁定可以提供发射频率的全光同步，即使在波长扫描发射下。通过使扫描参数适应光纤工厂中的条件，可以减轻传输损伤。在这方面，我的实验证明，波长跳变但锁定收发器对，它建立在概念上简单的外部调制激光技术，具有更高的鲁棒性反射串扰。由于在传输路径中的菲涅耳反射处产生的失真而导致的接收损失可以在〜 OdB的低光信号反射比下减少>90%。
英文摘要：
Coherent homodyne detection requires a precise matching of emission wavelengths between transmitter and local oscillator at the receiver. Injection-locking can provide all-optical synchronization of the emission frequencies, even under wavelength-swept emission. By adapting the sweep parameters to the conditions in the optical fiber plant, transmission impairments can be mitigated. In this regard I experimentally demonstrate that a wavelength-hopping yet locked transceiver pair, which builds on conceptually simple externally modulated laser technology, features a much higher robustness to reflection crosstalk. The reception penalty due to distortions arising at a Fresnel reflection in the transmission path can be reduced by >90% at a low optical signal-to-reflection ratio of ~0 dB.
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