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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 12 — Jun. 11, 2007
  • pp: 7489–7498

Multiple-channel silicon micro-resonator based filters for WDM applications

Shijun Xiao, Maroof H. Khan, Hao Shen, and Minghao Qi  »View Author Affiliations


Optics Express, Vol. 15, Issue 12, pp. 7489-7498 (2007)
http://dx.doi.org/10.1364/OE.15.007489


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Abstract

– We demonstrate predictable resonance wavelength shifts in silicon micro-resonators by varying their perimeters using high-resolution lithography. The linear coefficient between the resonance wavelength shifts and the perimeter changes is determined with detailed experiments, and found to be nearly constant across the C and L bands in telecommunications. This empirical coefficient is also compared to that obtained from simulations on straight waveguides. Based on the linear model, without post-fabrication trimming or tuning, an eight-channel wavelength de-multiplexer with reasonably predicted average channel spacing ~ 1.8±0.1 nm (3dB bandwidth ~ 0.7±0.1 nm) is demonstrated at telecommunication bands in a silicon chip for the first time. This filter has out-of-band rejection ratio ~ 40 dB, low channel crosstalk ≤ 30 dB and low channel dropping loss ≤ 4±1 dB except for degraded performance in one channel due to fabrication imperfections.

© 2007 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.5750) Optical devices : Resonators
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Integrated Optics

History
Original Manuscript: April 17, 2007
Revised Manuscript: May 15, 2007
Manuscript Accepted: May 31, 2007
Published: June 4, 2007

Citation
Shijun Xiao, Maroof H. Khan, Hao Shen, and Minghao Qi, "Multiple-channel silicon micro-resonator based filters for WDM applications," Opt. Express 15, 7489-7498 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-12-7489


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