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Silicon photonics dual-coupler nested coupled cavities
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Paper Abstract

In this work, we present the realization of a novel configuration of dual-coupler nested coupled ring resonator on silicon photonics technology. The waveguide height and width are 220 nm and 500 nm, respectively, surrounded by air from the top and by silicon-oxide on the three other sides. The design assumes TM mode with group refractive index of 3.17 at 1550 nm. The design consists of two mini-racetrack resonators of the smallest lengths of 150.8 and 182.13 μm corresponding to resonance, and bending radius of 25 μm, to minimize bending losses. The directional couplers are designed for a coupling ratio of 97/3. The proposed configuration and the single cavity ring resonator are fabricated using IMEC- ePIXfab passive technology. The measured response shows that the new configuration enhances the finesse by up to 10 times. The proposed high finesse resonator can boost the performance in many applications such as gas sensing, rotation sensing and optical filters.

Paper Details

Date Published: 4 March 2019
PDF: 7 pages
Proc. SPIE 10923, Silicon Photonics XIV, 109231P (4 March 2019); doi: 10.1117/12.2509661
Show Author Affiliations
Rabab A. Shalaby, Ain Shams Univ. (Egypt)
Mahmoud A. Selim, Ain Shams Univ. (Egypt)
George A. Adib, Ain Shams Univ. (Egypt)
Yasser M. Sabry, Ain Shams Univ. (Egypt)
Si-Ware Systems (Egypt)
Michael Gad, Ain Shams Univ. (Egypt)
Diaa Khalil, Ain Shams Univ. (Egypt)
Si-Ware Systems (Egypt)

Published in SPIE Proceedings Vol. 10923:
Silicon Photonics XIV
Graham T. Reed; Andrew P. Knights, Editor(s)

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