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Gain-clamped two-stage L-band EDFA with a FBG laser in second stage

✍ Scribed by S.W. Harun; H. Ahmad

Book ID
104159862
Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
221 KB
Volume
35
Category
Article
ISSN
0030-3992

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✦ Synopsis

A gain-clamped two-stage L-band EDFA is demonstrated by simply incorporating two di erent FBGs on both side of EDF in the second stage. It forms a FBG laser at 1560 nm to clamp the gain in the system. The gain is clamped at about 16:5 dB with gain variation of less than 1:0 dB at dynamic range up to -10 dBm. A at gain is obtained over 30 nm of wavelength range from 1568 to 1598 nm with a gain variation of less than 1:1 dB. At the at region, the noise ÿgure varies from 5.0 to 5:8 dB, which is slightly higher compared to those of unclamped ampliÿer. The advantage of this technique is that the FBG laser does not disturb the WDM signals in the at gain region.

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