Coherence effect on the measurement of optical fiber nonlinear coefficient

We investigated a source coherence effect on the measurement of the optical fiber nonlinear coefficient by use of dual optical frequencies. We produced coherent and incoherent dual optical frequencies with a self-heterodyne Mach-Zehnder interferometer with and without a delay line, respectively. Our...

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Bibliographic Details
Published in:Optics letters 2005-05, Vol.30 (10), p.1120-1122
Main Authors: SEUNG KWAN KIM, HAN SEB MOON, SEO, Jung-Chul
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fiber testing and measurement of fiber parameters
Integrated optics. Optical fibers and wave guides
Optical and optoelectronic circuits
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Summary:We investigated a source coherence effect on the measurement of the optical fiber nonlinear coefficient by use of dual optical frequencies. We produced coherent and incoherent dual optical frequencies with a self-heterodyne Mach-Zehnder interferometer with and without a delay line, respectively. Our measurement results included both an electrostrictive and a Kerr nonlinear coefficient because of the low modulation frequency. Comparing the coherent case with an incoherent case, we obtained a nonlinear coefficient that was more than 3% higher in the coherent case.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.30.001120