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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 9 — May. 5, 2014
  • pp: 10430–10438

Embedded coupled microrings with high-finesse and close-spaced resonances for optical signal processing

Mario C. M. M. Souza, Luis A. M. Barea, Felipe Vallini, Guilherme F. M. Rezende, Gustavo S. Wiederhecker, and Newton C. Frateschi  »View Author Affiliations

Optics Express, Vol. 22, Issue 9, pp. 10430-10438 (2014)

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Single microring resonators have been used in applications such as wavelength multicasting and microwave photonics, but the dependence of the free spectral range with ring radius imposes a trade-off between the required GHz optical channel spacing, footprint and power consumption. We demonstrate four-channel all-optical wavelength multicasting using only 1 mW of control power, with converted channel spacing of 40-60 GHz. Our device is based on a compact embedded microring design fabricated on a scalable SOI platform. The coexistence of close resonance spacing and high finesse (205) in a compact footprint is possible due to enhanced quality factors (30,000) resulting from the embedded configuration and the coupling-strength dependence of resonance spacing, instead of ring size. In addition, we discuss the possibility of achieving continuously mode splitting from a single-notch resonance up to 40 GHz.

© 2014 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.1150) Optical devices : All-optical devices
(230.4555) Optical devices : Coupled resonators

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: February 10, 2014
Revised Manuscript: April 12, 2014
Manuscript Accepted: April 16, 2014
Published: April 23, 2014

Mario C. M. M. Souza, Luis A. M. Barea, Felipe Vallini, Guilherme F. M. Rezende, Gustavo S. Wiederhecker, and Newton C. Frateschi, "Embedded coupled microrings with high-finesse and close-spaced resonances for optical signal processing," Opt. Express 22, 10430-10438 (2014)

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