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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 21 — Oct. 13, 2008
  • pp: 16546–16551

Compact and low insertion loss (~1.0 dB) Mach-Zehnder interferometer-synchronized arrayed-waveguide grating multiplexer with flat-top frequency response

Tomohiro Shibata, Shin Kamei, Tsutomu Kitoh, Takuya Tanaka, and Masaki Kohtoku  »View Author Affiliations

Optics Express, Vol. 16, Issue 21, pp. 16546-16551 (2008)

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We have developed a compact Mach-Zehnder interferometer (MZI)-synchronized arrayed-waveguide grating (AWG) multiplexer with 40 100-GHz-spaced channels using 1.5-% Δ waveguides. This MZI-synchronized AWG has a chip size of only 35×28 mm2, and a low insertion loss of 1.0 - 1.2 dB with a flat-top frequency response. This low insertion loss is achieved by i) installing spot-size converters at the ends of optical input and output waveguides, and ii) employing a narrow gap in a directional coupler at the junction of the MZI and AWG. This device exhibited other excellent characteristics including a wide 0.5-dB passband of more than 45 GHz and a low adjacent crosstalk of less than -35 dB.

© 2008 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.0130) Integrated optics : Integrated optics
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Integrated Optics

Original Manuscript: July 9, 2008
Revised Manuscript: September 5, 2008
Manuscript Accepted: September 8, 2008
Published: October 2, 2008

Tomohiro Shibata, Shin Kamei, Tsutomu Kitoh, Takuya Tanaka, and Masaki Kohtoku, "Compact and low insertion loss (~ 1.0 dB) Mach- Zehnder interferometer-synchronized arrayed-waveguide grating multiplexer with flat-top frequency response," Opt. Express 16, 16546-16551 (2008)

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