Accession Number : ADP006976

Title :   Nd3(+)-Doped Fluoride Fiber Amplifier Module with 10 dB and High Pump Efficiency,

Corporate Author : NIPPON TELEGRAPH AND TELEPHONE CORP TAKE TRANSMISSION SYSTEMS LABS

Personal Author(s) : Miyajima, Yoshiaki ; Sugawa, Tomoki ; Komukai, Tetsurou

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Recently, Nd3+-doped fluoride fiber has attracted much interest, because it has the potential for optical amplification around the 1.3 um communication band. In terms of the effect of ESA(excited state absorption) and the probability of radiative transition, fluoride fiber is preferable to silica fiber as a host glass. However, some problems must be solved for the development of a practical amplifier. First, gain has not been sufficiently large for a practical pump power to be obtained from diode lasers. Second, gain has been obtained in wavelengths longer than 1.31 um. In this report, we focus on the first problem. This work reports that a gain of 10 dB was obtained by using bidirectional 25 mW pumpings and by applying a 1.05 um rejection filter in doped fiber.

Descriptors :   *AMPLIFIERS, AMPLIFICATION, DIODES, FIBERS, FILTERS, FLUORIDES, GAIN, LASERS, POWER, PROBABILITY, PUMPS, REJECTION, TRANSITIONS, WORK, OPTICAL EQUIPMENT.

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE