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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 5 — Mar. 1, 2008
  • pp: 530–532

Silicon-on-insulator eight-channel optical multiplexer based on a cascade of asymmetric Mach–Zehnder interferometers

Dae Woong Kim, Assia Barkai, Richard Jones, Nomi Elek, Hat Nguyen, and Ansheng Liu  »View Author Affiliations

Optics Letters, Vol. 33, Issue 5, pp. 530-532 (2008)

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A monolithically integrated eight-channel optical multiplexer (Mux) with a 400 GHz channel spacing 1550 nm is presented based on a silicon-on-insulator rib waveguide and an asymmetric Mach–Zehnder interferometer. All channels were optimized independently with integrated heaters. The fully tuned Mux shows an adjacent channel isolation of 13 dB , an excess loss of 2.6 dB , and a channel uniformity of 1.5 dB over a 25 nm wavelength span. In addition, the phase tuning efficiency for different interlevel dielectric layer thicknesses and thermal crosstalk were investigated.

© 2008 Optical Society of America

OCIS Codes
(130.0250) Integrated optics : Optoelectronics
(130.3120) Integrated optics : Integrated optics devices
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 29, 2007
Manuscript Accepted: December 24, 2007
Published: February 29, 2008

Dae Woong Kim, Assia Barkai, Richard Jones, Nomi Elek, Hat Nguyen, and Ansheng Liu, "Silicon-on-insulator eight-channel optical multiplexer based on a cascade of asymmetric Mach-Zehnder interferometers," Opt. Lett. 33, 530-532 (2008)

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