Design methods of long-period fiber gratings for the equalization of nonflat erbium gain spectrum

2001 ◽  
Author(s):  
Jinho Bae ◽  
Joohwan Chun ◽  
Sang Bae Lee
Keyword(s):  
Design Methods ◽  
Gain Spectrum ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings

Two Methods for Synthesizing the Long Period Fiber Gratings with the Inverted Erbium Gain Spectrum

1999 ◽  
Vol 38 (Part 2, No. 7B) ◽  
pp. L819-L822 ◽  
Author(s):  
Jinho Bae ◽  
Joohwan Chun ◽  
Sang Bae Lee
Keyword(s):  
Gain Spectrum ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings

EDFA gain flattening optimization with long period fiber gratings in WDM system

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Divyangna Gandhi ◽  
Shilpi Gupta ◽  
Monika Gambhir
Keyword(s):  
Fiber Amplifier ◽  
Grating Period ◽  
Gain Spectrum ◽  
Fiber Gratings ◽  
Erbium Doped Fiber Amplifier ◽  
Long Period ◽  
Input Signal Power ◽  
Long Period Fiber Gratings ◽  
Gain Flattening ◽  
Peak Gain

Abstract This paper highlights a proposed optimized gain flatness technique for nonuniform gain spectrum of the erbium-doped fiber amplifier (EDFA) by introduction of long period fiber gratings (LPFG). In this analysis, EDFA gain spectrum has been evaluated between 1525 and 1600 nm with −20 dBm input signal power. Attenuation peaks of LPFG are optimized with a grating period of 240 µm and grating length of 30000 µm in the wavelength range of 1.1–1.8 μm, to compensate the peak gain of EDFA. Results have shown that EDFA peak gain of 35.94 dB is achieved at 1532.89 nm wavelength. This 35.94 dB peak gain is flattened up to 2.65 dB using long period fiber gratings. Also, less than ±0.3 dB gain flatness is achieved between 1528 and 1560 nm wavelength. The proposed less complex technique can be used to modify the grating parameters during fabrication in order to produce the loss peak at desired wavelength, which is efficient to flatten EDFA gain peak.

scholarly journals Long period fiber gratings written in photonic crystal fibers by use of CO2 laser

2013 ◽  
Vol 3 (3) ◽  
pp. 193-201 ◽  
Author(s):  
Yiping Wang ◽  
Changrui Liao ◽  
Xiaoyong Zhong ◽  
Jiangtao Zhou ◽  
Yingjie Liu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Co2 Laser ◽  
Photonic Crystal Fibers ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings ◽  
Crystal Fibers

Femtosecond Laser Inscribed Small-Period Long-Period Fiber Gratings With Dual-Parameter Sensing

2018 ◽  
Vol 18 (3) ◽  
pp. 1100-1103 ◽  
Author(s):  
Zhong-Ming Zheng ◽  
Yong-Sen Yu ◽  
Xuan-Yu Zhang ◽  
Qi Guo ◽  
Hong-Bo Sun
Keyword(s):  
Femtosecond Laser ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings ◽  
Small Period

Electrically tunable long-period fiber gratings with low-birefringence liquid crystal near the turn-around point

2017 ◽  
Vol 25 (4) ◽  
pp. 290-295 ◽  
Author(s):  
A. Czapla ◽  
W.J. Bock ◽  
T.R. Woliński ◽  
P. Mikulic ◽  
R. Dąbrowski ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings
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