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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 10718–10724

Characteristics of a multi-mode interference device based on Ti:LiNbO3 channel waveguide

Y. L. Lee, T. J. Eom, W. Shin, B.-A. Yu, D.-K. Ko, W.-K. Kim, and H.-Y. Lee  »View Author Affiliations

Optics Express, Vol. 17, Issue 13, pp. 10718-10724 (2009)

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We have analyzed the multi-mode interference effect depending on the wavelength and the polarization states of input beam in a multi-mode Ti:LiNbO3 waveguide at about 1300 nm region. The transmitted optical signal of a Ti:LiNbO3 waveguide shows the periodic oscillation as a function of input wavelength. The measured average periodicity of the oscillation in TM and TE polarization beams were about 18 nm and 48 nm, respectively. Actually, the periodicity is determined by the refractive index difference between the two modes (fundamental and first modes). Therefore, we have explained the experimental results with the theoretical calculations which are derived from a quasi-analytical technique based on the effective-refractive-index method and the equation of coupling length determined by the mode phase factor in the multi-mode waveguide.

© 2009 Optical Society of America

OCIS Codes
(130.3730) Integrated optics : Lithium niobate
(230.0230) Optical devices : Optical devices
(230.7380) Optical devices : Waveguides, channeled
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Integrated Optics

Original Manuscript: April 20, 2009
Revised Manuscript: June 1, 2009
Manuscript Accepted: June 3, 2009
Published: June 11, 2009

Y. L. Lee, T. J. Eom, W. Shin, B.-A. Yu, D.-K. Ko, W.-K. Kim, and H.-Y. Lee, "Characteristics of a multi-mode interference device based on Ti:LiNbO3 channel waveguide," Opt. Express 17, 10718-10724 (2009)

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