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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Souza, Mario C. M. M. [1] ; Barea, Luis A. M. [1] ; Vallini, Felipe [1] ; Rezende, Guilherme F. M. [1] ; Wiederhecker, Gustavo S. [1] ; Frateschi, Newton C. [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Optics Express; v. 22, n. 9, p. 10430-10438, MAY 5 2014.
Web of Science Citations: 15
Abstract

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. (C)2014 Optical Society of America (AU)

FAPESP's process: 05/51689-2 - Optics and Photonics Research Center at UNICAMP
Grantee:Hugo Luis Fragnito
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 08/57857-2 - Photonics for optical communications
Grantee:Hugo Luis Fragnito
Support Opportunities: Research Projects - Thematic Grants