QPM Wavelength Converter Using Direct-Bonded Ridge Waveguide With Integrated MMI Multiplexer

Author

Umeki, Takeshi ; Tadanagai, Osamu ; Asobe, Masaki

Author_Institution

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

Volume

23

Issue

1

fYear

2011

Firstpage

33

Lastpage

35

Abstract

We fabricated a wavelength-division multiplexer for 0.78- and 1.56-μm light using multimode interference (MMI) in a direct-bonded LiNbO₃ ridge waveguide. We obtained a low excess insertion loss of 1.0 and 0.5 dB for 0.78- and 1.56-μm light, respectively. We integrated a quasi-phase-matched (QPM) wavelength converter with an MMI multiplexer on one chip for the first time. We successfully demonstrated high-quality wavelength conversion based on difference-frequency generation with a parametric gain.

Keywords

lithium compounds; optical fabrication; optical frequency conversion; optical losses; optical phase matching; optical planar waveguides; optical wavelength conversion; ridge waveguides; wavelength division multiplexing; LiNBO₃; QPM wavelength converter; difference frequency generation; direct bonded ridge waveguide; integrated MMI multiplexer; low excess insertion loss; multimode interference; parametric gain; quasiphase-matched wavelength converter; wavelength 0.78 mum; wavelength 1.56 mum; wavelength division multiplexer; Bandwidth; Couplers; Extinction ratio; Multiplexing; Optical waveguides; Optical wavelength conversion; Signal to noise ratio; Integrated optics; nonlinear optics; optical frequency conversion; ridge waveguides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2010.2090515

Filename

5617215