Technology for EDFA Gain Flattening Based on Long Period Fiber Grating

2012 ◽  
Vol 443-444 ◽  
pp. 484-487
Author(s):  
Kai Xian Liu
Keyword(s):  
Optical Communication ◽  
System Performance ◽  
Communication Systems ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Optical Communication Systems ◽  
Gain Flattening ◽  
Period Fiber Grating ◽  
Effective Transmission

EDFA is an important component in WDM optical communication systems. But the uneven characteristic will lead to reduced effective transmission bandwidth and system performance degradation. This paper studies on issues of EDFA gain flattering based on long period fiber grating, and provides detailed analysis of the method of using LPFG to achieve flat EDFA output gain. Numerical simulation result shows that this method can reduce unevenness to 0.2dB and below.

Broad-band EDFA gain flattening by using an embedded long-period fiber grating filter

2007 ◽  
Vol 271 (2) ◽  
pp. 377-381 ◽  
Author(s):  
N. Ni ◽  
C.C. Chan ◽  
K.M. Tan ◽  
S.C. Tjin ◽  
X.Y. Dong
Keyword(s):  
Broad Band ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Gain Flattening ◽  
Period Fiber Grating

scholarly journals Spectral and Dispersion Properties of Long Period Fiber Grating for Optical Communication Systems

2018 ◽  
Vol 7 (4) ◽  
pp. 109-116 ◽  
Author(s):  
V. Jain ◽  
S. Pawar ◽  
S. Kumbhaj ◽  
P.K. Sen
Keyword(s):  
Communication Systems ◽  
Group Delay ◽  
Physical Parameters ◽  
Fiber Grating ◽  
Mathematical Treatment ◽  
Dispersion Properties ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Resonance Band ◽  
Period Fiber Grating

Present work deals with the analytical study of spectral and dispersion properties of long period fiber grating (LPFG) under linear regime. The standard parameters in the understanding of the optical features of an LPFG have been analyzed using the linear coupling processes such that one can appreciate without going through the cumbersome mathematical treatment of coupled mode equations the basic characteristics of the grating. We have analyze transmittance, phase factor, group delay and group velocity dispersion (GVD) of the LPFG as functions of physical parameters like operating wavelength, grating length, induced index change, and detuning parameter. Special attention is paid to the study of GVD with second and third order dispersion contribution as well as the filter characteristics and delay response of the grating. In case of strong grating, we find that at a particular grating strength the resonance band splits into two bands. Negative group delay for certain values of coupling strength suggested that an LPFG can also be used as dispersion compensator in optical fiber communication.

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

2016 ◽  
Vol 6 (3) ◽  
pp. 243-248 ◽  
Author(s):  
Fereshteh Mohammadi Nafchi ◽  
Sharifeh Shahi ◽  
Mohammad Taha Shaffaatifar ◽  
Mohammad Kanani ◽  
Hossein Noormohammadi
Keyword(s):  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Gain Flattening ◽  
Flattening Filter ◽  
Period Fiber Grating ◽  
Gain Flattening Filter
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