A wide-band guided-wave periodic multi/demultiplexer with a ring resonator for optical FDM transmission systems

Author

Oda, Kazuhiro ; Takato, Norio ; Toba, Hiromu ; Nosu, Kiyoshi

Author_Institution

NTT Labs., Kanagawa, Japan

Volume

6

Issue

6

fYear

1988

fDate

6/1/1988 12:00:00 AM

Firstpage

1016

Lastpage

1023

Abstract

A wide-band guided-wave periodic multi/demultiplexer with a ring resonator for optical frequency-division-multiplexing (FDM) transmission systems is demonstrated. This periodic multi/demultiplexer consists of a Mach-Zehnder interferometer and ring resonator. It has a flat wide bandwidth and sharp cutoff regions. The authors describe theoretical analysis, design method, and experimental results of the multi/demultiplexer. The fabricated periodic multi/demultiplexer with a ring resonator has 5-GHz channel frequency separation at the 1.55-μm wavelength region. Measured average loss was 4.8-dB and the average crosstalk was -13.2 dB. At 0.5-dB loss up from the minimum loss level, a width of 4.0 GHz was measured. This `0.5-dB bandwidth´ is 1.8 times wider than that of the conventional Mach-Zehnder type periodic multi/demultiplexer

Keywords

cavity resonators; crosstalk; frequency division multiplexing; light interferometers; multiplexing equipment; optical communication equipment; 1.55 micron; Mach-Zehnder interferometer; channel frequency separation; crosstalk; optical FDM transmission systems; optical frequency-division-multiplexing; ring resonator; wide-band guided-wave periodic multi/demultiplexer; Design methodology; Directional couplers; Frequency division multiplexing; Loss measurement; Optical crosstalk; Optical filters; Optical interferometry; Optical ring resonators; Optical waveguides; Wideband;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.4093

Filename

4093