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

作者：Kumar N^*; Shenoy MR; Pal BP

来源：Optical Engineering, 2006, 45(1): 015004.

DOI：10.1117/1.250475

• single-mode fibers
• mode effective index
• Mach-Zehnder interferometer
• all-fiber interferometer

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.

• 出版日期2006-1