Nondestructive characterization of fiber couplers by a local perturbation method
A technique for the nondestructive characterization of fiber couplers is demonstrated. A CO<sub>2</sub> laser beam is scanned along the coupler length inducing a local perturbation to the coupler eigenmodes. Information about the power evolution and the coupling-constant variation along...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2002.
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| Subjects: | |
| Online Access: | Get fulltext |
| Summary: | A technique for the nondestructive characterization of fiber couplers is demonstrated. A CO<sub>2</sub> laser beam is scanned along the coupler length inducing a local perturbation to the coupler eigenmodes. Information about the power evolution and the coupling-constant variation along the coupler length can be obtained by applying an asymmetric and symmetric perturbation, respectively. Experimental results of the characterization of a half- and a full-cycle fiber coupler using this technique are presented. |
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