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Proceedings Paper

Reconfigurable optical add-drop multiplexer (R-OADM) based on silicon photonic crystal slab waveguides
Author(s): Tao Chu; Hirohito Yamada; Akiko Gomyo; Jun Ushida; Satomi Ishida; Yasuhiko Arakawa
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Paper Abstract

Reconfigurable optical add/drop multiplexers (R-OADMs) are indispensable devices in wavelength division multiplexing (WDM) network systems, since they can be used for dynamically wavelength routing and for replacing any failed OADM unit. Here, we propose a photonic integrated R-OADM device based on silicon photonic crystal (PhC) slab waveguides, which is controlled through thermo-optic effect. The R-OADM device was composed of a tunable wavelength multiplexer/demultiplexer and a 2×2 optical switch, which were both formed with Mach-Zehnder interferometers (MZIs). The device was compact with a net footprint of 500 μm × 140 μm, excluding its electrode pads. The dropping central wavelength of the R-OADM can be tuned through thermo-optic effect, and the output port of the drop signal can be selected between the THROUGH and DROP ports with the 2x2 optical switch. A maximum 10.8 nm dropping wavelength tuning was obtained with a heating power of 0.9 W. The 3-dB channel-dropping bandwidth was 5 nm and the extinction ratio at the dropping wavelength for the port THROUGH was as high as 40 dB. The tuning response speed was about 100 μsec.

Paper Details

Date Published: 13 October 2006
PDF: 8 pages
Proc. SPIE 6376, Optomechatronic Micro/Nano Devices and Components II, 63760I (13 October 2006); doi: 10.1117/12.688125
Show Author Affiliations
Tao Chu, NEC Corp. (Japan)
Optoelectronic Industry and Technology Development Association (Japan)
Hirohito Yamada, Tohoku Univ. (Japan)
Akiko Gomyo, NEC Corp. (Japan)
Optoelectronic Industry and Technology Development Association (Japan)
Jun Ushida, NEC Corp. (Japan)
Optoelectronic Industry and Technology Development Association (Japan)
Satomi Ishida, Univ. of Tokyo (Japan)
Yasuhiko Arakawa, Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 6376:
Optomechatronic Micro/Nano Devices and Components II
Yoshitada Katagiri, Editor(s)

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