We present Vernier-effect photonic microcavities based on a germanium-on-silicon technology platform, operating around the mid-infrared wavelength of 3.8 mu m. Cascaded racetrack resonators have been designed to operate in the second regime of the Vernier effect, and typical Vernier comb-like spectra have been successfully demonstrated with insertion losses of similar to 5 dB, maximum extinction ratios of similar to 23 dB, and loaded quality factors higher than 5000. Furthermore, an add-drop racetrack resonator designed for a Vernier device has been characterized, exhibiting average insertion losses of 1 dB, extinction ratios of up to 18 dB, and a quality factor of similar to 1700.

Germanium-on-silicon Vernier-effect photonic microcavities for the mid-infrared / Troia, Benedetto; Nedeljkovic, M.; Khokhar, A.; Soler Penades, J.; Alonso Ramos, C.; Passaro, Vittorio; Mashanovich, G. Z.. - In: OPTICS LETTERS. - ISSN 0146-9592. - ELETTRONICO. - 41:3(2016), pp. 610-613. [10.1364/OL.41.000610]

Germanium-on-silicon Vernier-effect photonic microcavities for the mid-infrared

TROIA, Benedetto
Membro del Collaboration Group
;
PASSARO, Vittorio
Membro del Collaboration Group
;
2016-01-01

Abstract

We present Vernier-effect photonic microcavities based on a germanium-on-silicon technology platform, operating around the mid-infrared wavelength of 3.8 mu m. Cascaded racetrack resonators have been designed to operate in the second regime of the Vernier effect, and typical Vernier comb-like spectra have been successfully demonstrated with insertion losses of similar to 5 dB, maximum extinction ratios of similar to 23 dB, and loaded quality factors higher than 5000. Furthermore, an add-drop racetrack resonator designed for a Vernier device has been characterized, exhibiting average insertion losses of 1 dB, extinction ratios of up to 18 dB, and a quality factor of similar to 1700.
2016
Germanium-on-silicon Vernier-effect photonic microcavities for the mid-infrared / Troia, Benedetto; Nedeljkovic, M.; Khokhar, A.; Soler Penades, J.; Alonso Ramos, C.; Passaro, Vittorio; Mashanovich, G. Z.. - In: OPTICS LETTERS. - ISSN 0146-9592. - ELETTRONICO. - 41:3(2016), pp. 610-613. [10.1364/OL.41.000610]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/88198
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