Pump Light Source for Distributed Raman Amplification in MCFs With LD Sharing Circuit

Author

Suzuki, Kenya ; Ono, Hirotaka ; Mizuno, Takayuki ; Hashizume, Yasuaki ; Abe, Yoshiteru ; Takahashi, Tetsuo ; Takenaga, Katsuhiro ; Matsuo, Shoichiro ; Takara, Hidehiko

Author_Institution

NTT Photonics Labs., NTT Corp., Atsugi, Japan

Volume

24

Issue

21

fYear

2012

Firstpage

1937

Lastpage

1940

Abstract

We report an integrated pump source for distributed Raman amplification (DRA) in multicore fiber (MCF) where the MCF cores share pump laser diodes (LDs). The DRA requires many LDs and passive components if it is to obtain a flat and polarization-insensitive gain spectrum, especially in MCF transmission. To reduce the number of optical components, we propose a pump configuration where two cores share a pump LD set. The number of LDs is reduced almost by half. We integrate passive components, such as wavelength division multiplexers and polarization beam combiners, in a planar lightwave circuit to realize the LD sharing circuit. With our proposed pump sharing configuration, we obtain a DRA gain of more than 5.7 dB over the entire C-band in an MCF.

Keywords

Raman lasers; Raman spectra; fibre lasers; optical communication equipment; optical fibre networks; optical pumping; semiconductor lasers; LD sharing circuit; MCF cores; distributed Raman amplification; laser diodes; multicore fiber; planar lightwave circuit; polarization beam combiners; polarization insensitive gain spectrum; pump configuration; pump light source; wavelength division multiplexers; Gain; Light sources; Loss measurement; Optical fiber amplifiers; Optical fiber polarization; Stimulated emission; Distributed Raman amplification; Raman scattering; multicore fiber; optical amplifiers; optical fibers; optical waveguide; planar lightwave circuit;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2219617

Filename

6313891