Gain improvement in a dual-stage S-band EDFA by filtration of forward C-band ASE
Gain improvement in a dual-stage S-band erbium-doped fiber amplifier (S-band EDFA) is demonstrated using a broadband fiber Bragg grating (FBG) operating in the conventional-band (C-band) region or a C-band/S-band wavelength division multiplexing (WDM) coupler which filters out the forward C-band...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | en en |
| Published: |
Taylor & Francis
2008
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/84361/7/84361_Gain%20improvement%20in%20a%20dual-stage%20S-band%20EDFA%20by%20filtration.pdf http://irep.iium.edu.my/84361/8/84361_Gain%20improvement%20in%20a%20dual-stage%20S-band%20EDFA_Scopus.pdf http://irep.iium.edu.my/84361/ https://www.tandfonline.com/doi/abs/10.1080/09500340802296323?journalCode=tmop20 |
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| Summary: | Gain improvement in a dual-stage S-band erbium-doped fiber amplifier (S-band
EDFA) is demonstrated using a broadband fiber Bragg grating (FBG) operating
in the conventional-band (C-band) region or a C-band/S-band wavelength
division multiplexing (WDM) coupler which filters out the forward C-band
amplified spontaneous emission (ASE) in the amplifier system, thus increasing the
population inversion in the S-band region. The gain for the amplifier with the
WDM coupler increases by about 8.5 dB with an input signal power of 40 dBm,
compared to that of the conventional dual-stage amplifier. The gain improvement
varies from 4.0–9.2 dB at a wavelength region between 1480 to 1512 nm without a
significant noise figure penalty. |
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