Transmission bandwidth of the two-mode fiber link

Author

Kitayama, Ken-ichi ; Kato, Yasuyuki ; Seikai, Shigeyuki ; Uchida, Naoya ; Akiyama, Michio

Author_Institution

NTT Public Corp., Tokai, Ibaraki, Japan

Volume

18

Issue

11

fYear

1982

fDate

11/1/1982 12:00:00 AM

Firstpage

1871

Lastpage

1876

Abstract

The transmission bandwidth of the two-mode fiber link is investigated both experimentally and theoretically. It is shown that the experimental bandwidth as a function of wavelength is accurately predicted by using the individual fiber transfer functions and the mode conversion matrix at a splice. The bandwidth is maximized at the wavelength where the overall group delay time difference between the LP01and LP11modes becomes zero, showing the so-called modal equalization effect. It is experimentally certified that the 3 dB bandwidth over 2 GHz is obtained in the wide two-mode-propagation spectral region around 1.3 μm for 5.2 km long two-mode fiber link for the maximum output power launching condition, due to the relatively large attenuation of the LP11mode after long propagation.

Keywords

Optical fiber communication; Bandwidth; Delay effects; Fiber lasers; Optical attenuators; Optical fiber cables; Optical fiber testing; Optical pulses; Preforms; Propagation delay; Wavelength measurement;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.1982.1071461

Filename

1071461