Gain and noise figure improvements in double-pass S-band EDFA
Double-pass short-wavelength band erbium-doped fiber amplifier (S-band EDFA) with enhanced gain and noise figure characteristics is demonstrated. It uses a broadband fiber Bragg grating (FBG) operating in conventional-band (C-band) region to reduce the C-band amplified spontaneous emission (ASE) in...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
ELSEVIER SCI LTD
2007
|
| Subjects: | |
| Online Access: | http://shdl.mmu.edu.my/3035/ http://shdl.mmu.edu.my/3035/1/1059.pdf |
| Summary: | Double-pass short-wavelength band erbium-doped fiber amplifier (S-band EDFA) with enhanced gain and noise figure characteristics is demonstrated. It uses a broadband fiber Bragg grating (FBG) operating in conventional-band (C-band) region to reduce the C-band amplified spontaneous emission (ASE) in the amplifier system and thus increases the population inversion in the S-band region. The small signal gain is increased by about 2.7 dB for 1500 nm signal at pump power of 103 mW, compared with that of the conventional double-pass amplifier without the FBG. The corresponding noise figure is also improved by 0.5 dB. (c) 2006 Elsevier Ltd. All rights reserved. |
|---|