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Optics Letters

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  • Vol. 25, Iss. 5 — Mar. 1, 2000
  • pp: 299–301

Measurement of the chromatic dispersion of an optical fiber by use of a Sagnac interferometer employing asymmetric modulation

Kazi Sarwar Abedin, Masaharu Hyodo, and Noriaki Onodera  »View Author Affiliations


Optics Letters, Vol. 25, Issue 5, pp. 299-301 (2000)
http://dx.doi.org/10.1364/OL.25.000299


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Abstract

We describe a novel method, based on asymmetric modulation in a Sagnac interferometer, that measures the chromatic dispersion of single-mode fibers. The interferometer incorporates a phase modulator and a test fiber, so the dispersion can be determined from the interference fringe seen when a sweep rf signal is applied to the modulator. This technique provides picosecond temporal resolution without the need for any fast diagnostic equipment and is capable of accurately measuring the average dispersion of fibers several kilometers long.

© 2000 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2400) Fiber optics and optical communications : Fiber properties
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(260.2030) Physical optics : Dispersion

Citation
Kazi Sarwar Abedin, Masaharu Hyodo, and Noriaki Onodera, "Measurement of the chromatic dispersion of an optical fiber by use of a Sagnac interferometer employing asymmetric modulation," Opt. Lett. 25, 299-301 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-5-299


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