200-GHz FSR periodic multi/demultiplexer with flattened transmission and rejection band by using a Mach-Zehnder interferometer with a ring resonator

200-GHz FSR periodic multi/demultiplexer with flattened transmission and rejection band by using a Mach-Zehnder interferometer with a ring resonator

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 tra...

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Veröffentlicht in:IEEE photonics technology letters 2000-09, Vol.12 (9), p.1174-1176
Hauptverfasser: Kohtoku, M., Oku, S., Kadota, Y., Shibata, Y., Yoshikuni, Y.
Format: Artikel
Sprache:eng
Schlagworte:
Channel spacing
Couplers
Crosstalk
Delay lines
Demultiplexers
Flattening
Mach-Zehnder interferometers
Noise levels
Optical ring resonators
Optical waveguides
Passband
Rejection
Resonator filters
Resonators
Ridges
Semiconductor waveguides
Wavelength division multiplexing
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Zusammenfassung: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.874226