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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 8533–8540

An MMI-based wavelength combiner employing non-uniform refractive index distribution

Siddharth Singh, Keisuke Kojima, Toshiaki Koike-Akino, Bingnan Wang, Kieran Parsons, Satoshi Nishikawa, and Eiji Yagyu  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 8533-8540 (2014)

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A novel wavelength combiner using non-uniform refractive index distribution within a multimode interference device is proposed and simulated. The refractive index step creates separate localized modes with different effective refractive indices and two modes are strongly excited which form the basis of an interferometer. We applied the concept to 1.30/1.31 μm and 1.31/1.55 μm wavelength combiners on an InP substrate. The lengths of the devices are 1272 μm and 484 μm with simulated insertion losses of 0.6 dB and 0.67 dB respectively.

© 2014 Optical Society of America

OCIS Codes
(230.1360) Optical devices : Beam splitters
(230.3120) Optical devices : Integrated optics devices
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

Original Manuscript: February 13, 2014
Revised Manuscript: March 24, 2014
Manuscript Accepted: March 25, 2014
Published: April 2, 2014

Siddharth Singh, Keisuke Kojima, Toshiaki Koike-Akino, Bingnan Wang, Kieran Parsons, Satoshi Nishikawa, and Eiji Yagyu, "An MMI-based wavelength combiner employing non-uniform refractive index distribution," Opt. Express 22, 8533-8540 (2014)

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