Photonic Sensors, 2016, 6 (3): 243, 网络出版: 2016-10-20
Novelty Design in Gain Flattening Filter of ASE Source Based on Fat Ultra-Long Period Fiber Grating
Novelty Design in Gain Flattening Filter of ASE Source Based on Fat Ultra-Long Period Fiber Grating
Amplified spontaneous emission (ASE) source erbium-doped fiber amplifier (EDFA) gain flattening filter long-period fiber grating (LPFG)
摘要
Abstract
A new type of gain flattening filter for amplified spontaneous emission (ASE) source based on erbium doped fiber (EDF) is proposed and demonstrated by fabricating and writing two series ultra-long period fiber grating (ULPFG) on single mode fiber (SMF-28). The novelty method in this research is based on writing the two ULPFGs as fat gratings. The LPG is written by a simple and available arc-discharge method. The pump power based on single-pass backward pump configuration is around 100 mW, and the average wavelength is near to 974 nm. The gain flattening profile is obtained by 3.4 (±1.7) dB ripple in the wavelength range between 1524 nm and 1565 nm with 41-nm band width.
Fereshteh Mohammadi NAFCHI, Sharifeh SHAHI, Mohammad Taha SHAFFAATIFAR, Mohammad KANANI, Hossein NOORMOHAMMADI. Novelty Design in Gain Flattening Filter of ASE Source Based on Fat Ultra-Long Period Fiber Grating[J]. Photonic Sensors, 2016, 6(3): 243. Fereshteh Mohammadi NAFCHI, Sharifeh SHAHI, Mohammad Taha SHAFFAATIFAR, Mohammad KANANI, Hossein NOORMOHAMMADI. Novelty Design in Gain Flattening Filter of ASE Source Based on Fat Ultra-Long Period Fiber Grating[J]. Photonic Sensors, 2016, 6(3): 243.