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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 2 — Jan. 24, 2005
  • pp: 654–659

Symmetrical 1×2 digital photonic splitting switch with low electrical power consumption in SiGe waveguides

Baojun Li, Yao Zhang, Lihua Teng, Yuzhou Zhao, Soo-Jin Chua, and Xiangrong Wang  »View Author Affiliations

Optics Express, Vol. 13, Issue 2, pp. 654-659 (2005)

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A symmetrical digital photonic splitting switch with a low insertion loss and a low driving voltage is developed using carrier injection in a silicon-germanium material for optical communication systems and networks at a wavelength of 1.55 µm. The switch structure has been improved based on a traditional 1×2 Y-shaped configuration by using two widened carrier injection regions. The switch has a threshold voltage of 1.0 V and a corresponding threshold current of 85 mA on one of the two output waveguide arms. The calculated driving current density is 5.7 kA/cm2 and the calculated power consumption is 85 mW at the 85 mA of threshold current. The measured insertion loss and the crosstalk are 5.2 dB and -9.6 dB, respectively, at driving voltage over 2 V.

© 2005 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(230.3120) Optical devices : Integrated optics devices

ToC Category:
Research Papers

Original Manuscript: October 29, 2004
Revised Manuscript: January 19, 2005
Published: January 24, 2005

Baojun Li, Yao Zhang, Lihua Teng, Yuzhou Zhao, Soo-Jin Chua, and Xiangrong Wang, "Symmetrical 1x2 digital photonic splitting switch with low electrical power consumption in SiGe waveguides," Opt. Express 13, 654-659 (2005)

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