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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 2 — Jan. 22, 2007
  • pp: 639–645

Ultra-wideband design of waveguide magneto-optical isolator operating in 1.31μm and 1.55μm band

Yuya Shoji and Tetsuya Mizumoto  »View Author Affiliations


Optics Express, Vol. 15, Issue 2, pp. 639-645 (2007)
http://dx.doi.org/10.1364/OE.15.000639


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Abstract

The design of an ultra-wideband waveguide magneto-optical isolator is described. The isolator is based on a Mach-Zehnder interferometer employing nonreciprocal phase shift. The ultra-wideband design is realized by adjusting the wavelength dependence of reciprocal phase difference to compensate for that of nonreciprocal phase difference in the backward direction. We obtained the ultra-wideband design that provides isolation > 35dB from 1.25μm to >1.65μm. This is the proposal of magneto-optical isolator that operates both in 1.31μm band and 1.55μm band.

© 2007 Optical Society of America

OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(230.3240) Optical devices : Isolators

ToC Category:
Optical Devices

History
Original Manuscript: November 8, 2006
Revised Manuscript: January 10, 2007
Manuscript Accepted: January 10, 2007
Published: January 22, 2007

Citation
Yuya Shoji and Tetsuya Mizumoto, "Ultra-wideband design of waveguide magneto-optical isolator operating in 1.31μm and 1.55μm band," Opt. Express 15, 639-645 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-2-639


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References

  1. F. Auracher and H. H. Witte, "A new design for an integrated optical isolator," Opt. Commun. 13,435-438 (1975). [CrossRef]
  2. T. Mizumoto, K. Oochi, T. Harada, and Y. Naito, "Measurement of optical nonreciprocal phase shift in a Bi-substituted Gd3Fe5O12 film and application to waveguide-type optical circulator," J. Lightwave Technol. LT-4,347-352 (1986). [CrossRef]
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  5. H. Yokoi, T. Mizumoto, N. Shinjo, N. Futakuchi, and Y. Nakano, "Demonstration of an optical isolator, with a semiconductor guiding layer that was obtained by use of a nonreciprocal phase shift," Appl. Opt. 39,6158-6164 (2000). [CrossRef]
  6. Y. Shoji and T. Mizumoto, "Wideband design of nonreciprocal phase shift magneto-optical isolators using phase adjustment in Mach-Zehnder interferometer," Appl. Opt. 45,7144-7150 (2006). [CrossRef] [PubMed]

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