Reduction of Power Fluctuation in Pulsed Lightwave Frequency Sweepers With SOA Following EDFA

Author

Takano, Katsumi ; Nakagawa, Kiyoshi ; Takahashi, Yutaka ; Ito, Hiromasa

Author_Institution

Dept. of Electr. Eng., Yamagata Univ.

Volume

19

Issue

7

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

525

Lastpage

527

Abstract

A pulsed lightwave frequency sweeper is a frequency source with linear frequency scanning. It can be made using a fiber ring with an acoustooptic frequency shifter and an optical amplifier. The drawback of this sweeper, however, is optical power fluctuation that is attributable to power feedback to the erbium-doped fiber amplifier (EDFA) by the fiber ring. This study presents suppression of the fluctuation by tandem configuration of optical amplifiers, such as EDFA and semiconductor optical amplifiers in this order, in the fiber ring. The configuration was demonstrated experimentally and its noise performance was evaluated by changing the operation point of the amplifiers

Keywords

acousto-optical switches; erbium; fluctuations; frequency synthesizers; laser beam applications; laser noise; optical fibre amplifiers; optical fibre testing; semiconductor optical amplifiers; acoustooptic frequency shifter; acoustooptic switches; erbium-doped fiber amplifier; fiber ring; frequency synthesizers; laser noise performance; laser power feedback; optical fiber measurement; optical power fluctuation; power fluctuation reduction; pulsed lightwave frequency sweepers; semiconductor optical amplifier; tandem laser configuration; Erbium-doped fiber amplifier; Fluctuations; Frequency; Optical feedback; Optical fiber amplifiers; Optical noise; Optical pulses; Pulse amplifiers; Semiconductor optical amplifiers; Stimulated emission; Acoustooptic switches; frequency synthesizers; optical fiber amplifiers; optical fiber measurements;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.893830

Filename

4126569