All-fiber interferometric technique for estimating the mode effective index of a single-mode fiber

Naveen Kumar; M. R. Shenoy; Bishnu P. Pal D.D.S.

doi:10.1117/1.2150475

1 January 2006 All-fiber interferometric technique for estimating the mode effective index of a single-mode fiber

Naveen Kumar, M. R. Shenoy, Bishnu P. Pal D.D.S.

Author Affiliations +

Optical Engineering, Vol. 45, Issue 1, 015004 (January 2006). https://doi.org/10.1117/1.2150475

Abstract

An all-fiber interferometric experimental technique to determine the mode effective index n_eff of a single-mode fiber is proposed. The method involves setting up an unbalanced Mach-Zehnder interferometer (MZI) with the test fiber. By inducing a small change in the differential path length between the two arms of the MZI, a proportional change in the periodicity of its transmission spectrum could be introduced. A precise measurement of this change in periodicity has been used to accurately determine the value of n_eff of the test fiber.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Naveen Kumar, M. R. Shenoy, and Bishnu P. Pal D.D.S. "All-fiber interferometric technique for estimating the mode effective index of a single-mode fiber," Optical Engineering 45(1), 015004 (1 January 2006). https://doi.org/10.1117/1.2150475

Published: 1 January 2006

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KEYWORDS

Single mode fibers

Interferometry

Fiber couplers

Interferometers

Estimation theory

Mach-Zehnder interferometers

Microscopes

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