Abstract

The transmission mechanism of a multimode W-type optical fiber is clarified by the experimental study of the effect of the intermediate layer on the transmission characteristics. It is shown that control of the layer width is an effective means for achieving the desired loss and bandwidth. A W-type fiber with a thick intermediate layer has a transmission loss on the order of 2 dB/km. To determine the transmission characteristics of a W-type fiber applicable to system design, the length dependence of several fiber characteristics is investigated. Concepts such as splices used as mode scramblers and the effect of the intermediate layer as a barrier against OH absorption loss are introduced. The wavelength dependence of microbending loss of a W-type fiber is also described.

© 1978 Optical Society of America

Microbending losses of doubly clad (W-type) optical fibers

Toshiki P. Tanaka, Shoji Yamada, Masao Sumi, and Koichi Mikoshiba
Appl. Opt. 16(9) 2391-2394 (1977)

Numerical solution of power flow in multimode W-type optical fibers

Toshiki P. Tanaka and Shoji Yamada
Appl. Opt. 19(10) 1647-1652 (1980)

Influence of depth of intermediate layer on optical power distribution in W-type optical fibers

Ana Simović, Alexandar Djordjevich, and Svetislav Savović
Appl. Opt. 51(20) 4896-4901 (2012)

Transmission characteristics of graded-index optical fibers with a lossy outer layer

Norio Kashima and Naoya Uchida
Appl. Opt. 17(8) 1199-1207 (1978)

Steady-state characteristics of multimode W-type fibers

Toshiki P. Tanaka and Shoji Yamada
Appl. Opt. 18(19) 3261-3264 (1979)