Title :
200-GHz FSR periodic multi/demultiplexer with flattened transmission and rejection band by using a Mach-Zehnder interferometer with a ring resonator
Author :
Kohtoku, M. ; Oku, S. ; Kadota, Y. ; Shibata, Y. ; Yoshikuni, Y.
Author_Institution :
NTT Photonics Lab., Kanagawa, Japan
Abstract :
A periodic multi/demultiplexer that has a square spectrum response with a 200-GHz free spectrum range was fabricated using a modified Mach-Zehnder interferometer with MMI couplers, a delay line, and a ring resonator. A large enhancement of the FSR is obtained by using a deep ridge waveguide. The transmission bandwidths of 1 dB down and -15-dB rejection are about 75 GHz and over 50 GHz, respectively.
Keywords :
Mach-Zehnder interferometers; demultiplexing equipment; multiplexing equipment; optical communication equipment; optical delay lines; optical waveguides; ridge waveguides; 200 GHz; 50 GHz; 75 GHz; GHz FSR periodic multi/demultiplexer; MMI couplers; Mach-Zehnder interferometer; deep ridge waveguide; delay line; flattened transmission; modified Mach-Zehnder interferometer; rejection band; ring resonator; square spectrum response; transmission bandwidths; Channel spacing; Couplers; Crosstalk; Delay lines; Optical ring resonators; Optical waveguides; Passband; Resonator filters; Semiconductor waveguides; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
