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Optics Letters

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  • Vol. 28, Iss. 18 — Sep. 15, 2003
  • pp: 1663–1664

Silicon-wire-based ultrasmall lattice filters with wide free spectral ranges

Koji Yamada, Tetsufumi Shoji, Tai Tsuchizawa, Toshifumi Watanabe, Jun-ichi Takahashi, and Sei-ichi Itabashi  »View Author Affiliations


Optics Letters, Vol. 28, Issue 18, pp. 1663-1664 (2003)
http://dx.doi.org/10.1364/OL.28.001663


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Abstract

Using silicon-on-insulator-based silicon-wire waveguides with submicrometer cross sections, we constructed ultrasmall channel-dropping lattice filters for 1.5-μm infrared systems. The waveguide’s low-loss bends with 2.5-µm radius reduce the total length of the filter to less than 100 μm and enlarge the free spectral range to more than 80 nm. The measured spectra show fine channel-dropping characteristics, and the results agree well with numerical predictions. Moreover, we have succeeded in tuning the dropping wavelength by adjusting the lengths of the delay lines.

© 2003 Optical Society of America

OCIS Codes
(130.3060) Integrated optics : Infrared
(130.3120) Integrated optics : Integrated optics devices
(230.3990) Optical devices : Micro-optical devices
(230.7380) Optical devices : Waveguides, channeled

Citation
Koji Yamada, Tetsufumi Shoji, Tai Tsuchizawa, Toshifumi Watanabe, Jun-ichi Takahashi, and Sei-ichi Itabashi, "Silicon-wire-based ultrasmall lattice filters with wide free spectral ranges," Opt. Lett. 28, 1663-1664 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-18-1663


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