Journal of the Korean Institute of Telematics and Electronics S (전자공학회논문지S)
- Volume 34S Issue 8
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- Pages.20-26
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- 1997
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- 1226-5837(pISSN)
Characteristics of a tunable optical fiber drop/pass filter
파장 가변 가능한 광섬유 drop/pass필터의 특성 분석
Abstract
In this paper, we propose a tunable drop/pass filter in the form of composed of Mach-Zehnder interferometer, to which a fiber grating and two PZTs are attached. The proposed drop/pass filter drops a part of signal power at a specific wavelength and pass the remnant of the signal to the next node in WDM network. Our simulation results show that the optical feedback is less than 2% and the drop to pass ratio can be made bigger than 10% if the phase difference between the two arms is within .+-.0.2.pi. from (2m+1).pi.. Also, the output powers at drop prot and pass port are measured to be maximum at the phase difference of .pi./2 and .pi., respectively, as expected.
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