S-Band Gain-Flattened Double-Pass Discrete Fibre Raman Amplifiers Using Mechanically Induced Long-Period Fibre Gratings

Chin. Phys. Lett.

2006, Vol. 23

Issue (4): 842-844 DOI:

Original Articles

S-Band Gain-Flattened Double-Pass Discrete Fibre Raman Amplifiers Using Mechanically Induced Long-Period Fibre Gratings

LI Yong-Nan;LU Fu-Yun;FAN Yu;WANG Xin-Wei;WEI Dai

Institute of Physics, Nankai University, Tianjin 300071

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LI Yong-Nan, LU Fu-Yun, FAN Yu et al 2006 Chin. Phys. Lett. 23 842-844

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Abstract We experimentally demonstrate an S-band double-pass (DP) discrete fibre Raman amplifier (FRA) gain-flattened by using a mechanically induced long-period fibre grating (LPFG). Due to a photo-elastic effect in the fibre and its peak loss, the wavelength and depth of the mechanically induced LPFG are continuously regulated by varying the pressures, the angle of the fibre on the graphite rods which are used to produce the periodical pressures along the fibre, the number and the diameter of the graphite rods. Using this gain flattening filter, the gain profile of the DP-FRA is flattened to within ±0.8dB in the wavelength range from 1485nm to 1525nm.

Keywords: 42.65.Dr 42.79.Yd 42.18.Qb

Published: 01 April 2006

PACS:	42.65.Dr	(Stimulated Raman scattering; CARS)
	42.79.Yd
	42.18.Qb

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2006/V23/I4/0842

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	LI Yong-Nan
	LU Fu-Yun
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