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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 25 — Dec. 7, 2009
  • pp: 23247–23253

Integration of GaN/AlN all-optical switch with SiN/AlN waveguide utilizing spot-size conversion

Norio Iizuka, Haruhiko Yoshida, Nobuto Managaki, Toshimasa Shimizu, Sodabanlu Hassanet, Chiyasit Cumtornkittikul, Masakazu Sugiyama, and Yoshiaki Nakano  »View Author Affiliations


Optics Express, Vol. 17, Issue 25, pp. 23247-23253 (2009)
http://dx.doi.org/10.1364/OE.17.023247


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Abstract

Spot-size converters for an all-optical switch utilizing the intersubband transition in GaN/AlN multiple quantum wells are studied with the purpose of reducing operation power by improving the coupling efficiency between the input fiber and the switch. With a stair-like spot-size converter, the absorption saturation of 5 dB is achieved with a pulse energy of 25 pJ. The switch is integrated with a SiN/AlN waveguide and spot-size converters, and the structure provides the possibility of an integration of the switch with other functional devices. To further improve the coupling loss between the waveguide and the switch, triangular-shaped converters are investigated, demonstrating losses as low as 2 dB/facet.

© 2009 OSA

OCIS Codes
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(230.4320) Optical devices : Nonlinear optical devices
(230.7370) Optical devices : Waveguides
(250.6715) Optoelectronics : Switching

ToC Category:
Optical Devices

History
Original Manuscript: October 7, 2009
Revised Manuscript: November 16, 2009
Manuscript Accepted: November 22, 2009
Published: December 3, 2009

Citation
Norio Iizuka, Haruhiko Yoshida, Nobuto Managaki, Toshimasa Shimizu, Sodabanlu Hassanet, Chiyasit Cumtornkittikul, Masakazu Sugiyama, and Yoshiaki Nakano, "Integration of GaN/AlN all-optical switch with SiN/AlN waveguide utilizing spot-size conversion," Opt. Express 17, 23247-23253 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-25-23247


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References

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