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We proposed a remote pumped bidirectional C+L band fiber amplifier for wavelength division multiplexing (WDM) passive optical network (PON). A high-reflectivity pump reflector using three cascading fiber Bragg gratings (FBGs) is designed to reflect the residual pump power for L band amplification. Both the gains for C band and L band are larger than 10.0 dB under −10 dBm launched power. Using the...
In this study, we propose a sub-system with a long-haul transmission system for bridge emergency. A fiber Bragg grating is inserted into the sub-system to monitor the bridge situation. In addition, we setup an alternative free space optic route to replace the fiber cable route in case the bridge is damaged or collapsed. A 10 Gb/s per channel data rate over 75 km fiber span is used to verify the system...
An L band tunable fiber laser based on tunable FBGs and a broadband fiber mirror is demonstrated. A lasing output power at 1582.0 nm has side-mode-suppression-ratio and pumping efficiency of 55 dB and 12.2%, respectively.
We proposed a hybrid C+L band fiber amplifier bridged with double-pass dispersion compensators. Power equalization among C+L band channels is realized by adjusting the FBGs reflectivity. Pumping efficiency is improved by recycling residual pump power.
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