Chromatic dispersion measurement using the relative power of two beating frequencies
A novel technique for measuring the accumulated chromatic dispersion (CD) in single-mode fiber (SMF) is presented. The technique measures CD by simultaneously launching pump and probe optical signals at omega(1) angular optical-frequency separation, and two phase-conjugated terms into the SMF. The r...
| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
2005
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| Subjects: | |
| Online Access: | http://shdl.mmu.edu.my/2193/ |
| Summary: | A novel technique for measuring the accumulated chromatic dispersion (CD) in single-mode fiber (SMF) is presented. The technique measures CD by simultaneously launching pump and probe optical signals at omega(1) angular optical-frequency separation, and two phase-conjugated terms into the SMF. The relative power of the beat frequencies that appear after the photodetector at omega(1) and at 2 omega(1) is used to determine the net dispersion. This technique was successfully demonstrated using a semiconductor optical amplifier (SOA) as a phase conjugator in order to achieve a 20-dB relative power variation as a result of up to 1900-ps/nm CD change. (c) 2005 Wiley Periodicals, Inc. |
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