In-band OSNR monitoring using a pair of Michelson fiber interferometers

Two polarization-independent Michelson fiber interferometers with different optical delays were used to measure the in-band OSNR of an optical signal from 5 to 30 dB within an accuracy of 0.5 dB. Using an expansion of the amplitude autocorrelation function of the signal around zero delay, it was pos...

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Bibliographic Details
Published inOptics express Vol. 18; no. 4; pp. 3618 - 3625
Main Authors Flood, E, Guo, W H, Reid, D, Lynch, M, Bradley, A L, Barry, L P, Donegan, J F
Format Journal Article
LanguageEnglish
Published United States 15.02.2010
Subjects
Equipment Design
Equipment Failure Analysis
Fiber Optic Technology - instrumentation
Interferometry - instrumentation
Telecommunications - instrumentation
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Summary:Two polarization-independent Michelson fiber interferometers with different optical delays were used to measure the in-band OSNR of an optical signal from 5 to 30 dB within an accuracy of 0.5 dB. Using an expansion of the amplitude autocorrelation function of the signal around zero delay, it was possible to perform measurements without any prior knowledge of the signal. The system is shown to be immune to the effects of modulation frequency (up to 10G), partially and fully polarized noise, chromatic dispersion and poorly biased modulators.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.18.003618