Abstract

Theoretical and experimental investigations are made on an excess loss arising due to a lossy outer layer attached around a cladding in multimode step-index fibers. Equations for evaluating the excess loss are derived using the electromagnetic theory for LP modes. Experiments are made on fibers with a pure fused silica jacket around a cladding, focusing on the wavelength dependence of the excess loss. It is found that the loss increases as the wavelength becomes long and that the measured values are in good agreement with the calculated ones.

© 1977 Optical Society of America

Excess loss caused by the outer layer in a multimode step-index optical fiber: theory

Norio Kashima, Naoya Uchida, and Yukinori Ishida
Appl. Opt. 16(10) 2732-2737 (1977)

Excess loss caused by an outer layer in multimode step-index fibers: experiment

Norio Kashima and Naoya Uchida
Appl. Opt. 16(5) 1320-1322 (1977)

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

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

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)

Excess loss of single-mode jacketed optical fiber at low temperature

Tetsuro Yabuta, Nobuyuki Yoshizawa, and Kohshi Ishihara
Appl. Opt. 22(15) 2356-2362 (1983)