Investigation on the Effect of Gain Medium on the Performance of Double-pass Raman Amplifier
The Raman gain characteristics of the double-pass Raman amplifier (RA) is investigated for different gain medium. The double-pass operation is obtained by using an optical circulator at the end the gain medium to act as a loop mirror. The double-pass RA is experimentally demonstrated to enhance an o...
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| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
De Gruyter
2010
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/19785/ https://doi.org/10.1515/JOC.2010.31.1.7 |
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| Institution: | Universiti Malaya |
| Summary: | The Raman gain characteristics of the double-pass Raman amplifier (RA) is investigated for different gain medium. The double-pass operation is obtained by using an optical circulator at the end the gain medium to act as a loop mirror. The double-pass RA is experimentally demonstrated to enhance an on/off gain characteristic when compared to the conventional single pass system. By using a piece 20 km long non-zero dispersionshifted fiber (NZ-DSF) as the gain medium, maximum on/off gain of 23 dB is achieved in 1600 nm region using 350 mW of 1490 nm pump power. It is also observed that the backward pumping demonstrates a slightly better gain compared to that of forward pumping for the double-pass RA. |
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