Novelty design in gain flattening filter of ASE source based on fat ultra-long period fiber grating

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• 作者：Fereshteh Mohammadi Nafchi ; Sharifeh Shahi ; Mohammad Taha Shaffaatifar…
• 刊名：Photonic Sensors
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：6
• 期：3
• 页码：243-248
• 全文大小：752 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Chinese Library of Science
  Laser Technology and Physics and Photonics
  Microwaves, RF and Optical Engineering
  Measurement Science and Instrumentation
  Optics, Optoelectronics, Plasmonics and Optical Devices
  
• 出版者：University of Electronic Science and Technology of China, co-published with Springer
• ISSN：2190-7439
• 卷排序：6

文摘

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.KeywordsAmplified spontaneous emission (ASE) sourceerbium-doped fiber amplifier (EDFA)gain flattening filterlong-period fiber grating (LPFG)