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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 30, Iss. 3 — Feb. 1, 2005
  • pp: 251–253

Mach-Zehnder interferometer switch with a high extinction ratio over a wide wavelength range

Takayuki Mizuno, Hiroshi Takahashi, Tsutomu Kitoh, Manabu Oguma, Toshimi Kominato, and Tomohiro Shibata  »View Author Affiliations


Optics Letters, Vol. 30, Issue 3, pp. 251-253 (2005)
http://dx.doi.org/10.1364/OL.30.000251


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Abstract

We have realized a novel Mach-Zehnder interferometer (MZI) thermo-optic switch that can operate over a much wider wavelength range than a conventional MZI switch. We constructed the novel MZI switch by incorporating a phase-generating coupler (PGC) as an optical coupler. The PGC generates a nonlinear wavelength-dependent phase, which functions as a virtual wavelength-dependent delay part that cancels out the wavelength dependence of a MZI. We fabricated the novel MZI switch on a silica-based planar light-wave circuit and achieved a low insertion loss of less than 1.6 dB and a high extinction ratio of 30 dB over a wide wavelength range of 160 nm.

© 2005 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.3120) Integrated optics : Integrated optics devices
(230.7390) Optical devices : Waveguides, planar
(250.3140) Optoelectronics : Integrated optoelectronic circuits
(250.5300) Optoelectronics : Photonic integrated circuits

Citation
Takayuki Mizuno, Hiroshi Takahashi, Tsutomu Kitoh, Manabu Oguma, Toshimi Kominato, and Tomohiro Shibata, "Mach-Zehnder interferometer switch with a high extinction ratio over a wide wavelength range," Opt. Lett. 30, 251-253 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-3-251

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