Reflection spectra of etched FBGs under the influence of axial contraction and stress-induced index change
We present a new theoretical model for the broadband reflection spectra of etched FBGs which includes the effects of axial contraction and stress-induced index change. The reflection spectra of the etched FBGs with several different taper profiles are simulated based on the proposed model. In our ob...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Published: |
Optical Society of America
2013
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/14412/ https://www.osapublishing.org/oe/abstract.cfm?uri=oe-21-12-14808 |
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| Summary: | We present a new theoretical model for the broadband reflection spectra of etched FBGs which includes the effects of axial contraction and stress-induced index change. The reflection spectra of the etched FBGs with several different taper profiles are simulated based on the proposed model. In our observation, decaying exponential profile produces a broadband reflection spectrum with good uniformity over the range of 1540-1560 nm. An etched FBG with similar taper profile is fabricated and the experimental result shows good agreement with the theoretical model. |
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