Photonic Sensors, Volume. 6, Issue 3, 243(2016)
Novelty Design in Gain Flattening Filter of ASE Source Based on Fat Ultra-Long Period Fiber Grating
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.
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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
Category: Regular
Received: Jan. 12, 2016
Accepted: Jun. 3, 2016
Published Online: Oct. 20, 2016
The Author Email: SHAHI Sharifeh (shahilaser@khuisf.ac.ir)