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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 19 — Sep. 20, 2004
  • pp: 4608–4613

Finite difference time domain study of high efficiency photonic crystal superprisms

Toshihiko Baba, Takashi Matsumoto, and Manabu Echizen  »View Author Affiliations

Optics Express, Vol. 12, Issue 19, pp. 4608-4613 (2004)

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Input and output boundaries of a photonic crystal (PC) are optimized so that the superprism exhibits low insertion loss. It is shown that projected-airhole and half-circular airhole interfaces achieve transmission loss of 0.3 dB and 1.0 dB, respectively, for small and large incident angles of light against normal to boundaries. The finite-difference time-domain simulation shows that a low loss is essentially realized by a periodic phase modulation of the incident beam by the interfaces. It also demonstrates the clear steering of collimated light beam with varying wavelength. The enhancement of angular dispersion is also demonstrated by a PC composed of a dispersive medium.

© 2004 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.1950) Optical devices : Diffraction gratings
(230.3120) Optical devices : Integrated optics devices
(230.3990) Optical devices : Micro-optical devices

ToC Category:
Research Papers

Original Manuscript: August 5, 2004
Revised Manuscript: September 11, 2004
Published: September 20, 2004

Toshihiko Baba, Takashi Matsumoto, and Manabu Echizen, "Finite difference time domain study of high efficiency photonic crystal superprisms," Opt. Express 12, 4608-4613 (2004)

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