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Type: Artigo de periódico
Title: Embedded coupled microrings with high-finesse and close-spaced resonances for optical signal processing
Author: Souza, MCMM
Barea, LAM
Vallini, F
Rezende, GFM
Wiederhecker, GS
Frateschi, NC
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
Country: EUA
Editor: Optical Soc Amer
Rights: aberto
Identifier DOI: 10.1364/OE.22.010430
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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