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

Autor(es)

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]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Optics Express; v. 22, n. 9, p. 10430-10438, MAY 5 2014.
• Citações Web of Science: 15

Resumo

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)

• Processo FAPESP: 08/57857-2 - Fotônica para comunicações ópticas
• Beneficiário: Hugo Luis Fragnito
• Linha de fomento: Auxílio à Pesquisa - Temático
• Processo FAPESP: 05/51689-2 - Centro de Pesquisa em Óptica e Fotônica - UNICAMP (CEPOF-UNICAMP)
• Beneficiário: Hugo Luis Fragnito
• Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs