Accession Number : ADP007008

Title :   73.6KM Attenuation Free Concatenated Fibers Doped with Distributed Erbium,

Corporate Author : FUJIKURA LTD SAKURA (JAPAN)

Personal Author(s) : Tanaka, D. ; Wada, A. ; Sakai, T. ; Nazawa, T. ; Yamauchi, R.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Recently, distributed Er-doped fiber amplifiers have become of great interest. Intrinsic fiber loss can be compensated by the distributed gain. As a result, a fiber which is free from the attenuation can be realized. Due to its small gain, the distributed EDFA also has the advantage of low amplified spontaneous emission(ASE). Moreover, no isolator to prevent lasing is necessary, so bi-directional transmission is possible. This kind of fiber is also applicable to soliton transmission. In this paper, we describe a design of lengthwise-distribution of Er-concentration for long length attenuation-free fibers. An attenuation-free length of 73.6km has been realized at the signal level of -10dBm.

Descriptors :   *AMPLIFIERS, ATTENUATION, DIRECTIONAL, DISTRIBUTION, FIBERS, GAIN, LENGTH, SIGNALS, SOLITONS, DIODES.

Subject Categories : Electrical and Electronic Equipment
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE