Abstract

In this paper we present a new method for estimating the bandwidth of multimode optical fibers based on the frequency correlation function of the speckle patterns generated by the interference of fiber modes. This technique, which does not require a pulse or signal generator, can be utilized to estimate the bandwidth of a multimode fiber using a relatively short length of fiber. By applying this method to a test fiber we obtained a bandwidth of ~36 MHz · km which is in relatively good agreement with the ~44-MHz · km bandwidth measured by a conventional pulsed technique.

© 1983 Optical Society of America

Frequency dependence of modal noise in multimode optical fibers

Junji Ohtsubo
Appl. Opt. 28(19) 4235-4238 (1989)

Bandwidth estimation for multimode optical fibers using speckle patterns

Wolfgang Freude, Christian Fritzsche, and Gerhard K. Grau
Appl. Opt. 22(21) 3319-3320 (1983)

Characterization of optical fibers by a differential excitation technique

Haim Kobrinski and Gerald J. Herskowitz
Appl. Opt. 22(23) 3880-3886 (1983)

Measurement of the fiber loss spectrum using fiber Raman optical-time-domain reflectometry

Masataka Nakazawa and Masamitsu Tokuda
Appl. Opt. 22(12) 1910-1914 (1983)

Frequency dependence of modal noise in multimode optical fibers

Eric G. Rawson, Joseph W. Goodman, and Robert E. Norton
J. Opt. Soc. Am. 70(8) 968-976 (1980)