Waveguide-coupled metal-clad cavity with integrated feedback stub. (10th July 2017)

• Record Type: Journal Article
• Authors: Feng, Kaiyin; Nishimoto, Masaya; Yu, Chuanqing; Saylan, Sueda; Taylor, Richard J. E.; Tanemura, Takuo; Nakano, Yoshiaki
• Is Part Of: Japanese journal of applied physics. Volume 56:Number 8(2017)
• Publication Date: 2017-07-10
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.56.082201
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: We propose a wavelength-scale metal-clad III–V semiconductor cavity coupled to silicon-on-insulator (SOI) waveguide with integrated feedback stub for external tuning of the Q factor. We consider a typical wavelength-scale metal-clad InP/InGaAs cavity integrated on a SOI waveguide and demonstrate more than 5-fold Q -factor improvement in agreement with that predicted by the coupled-mode theory. From additional thermal analysis, we prove that improved heat dissipation can be realized by engineering the layer thicknesses without sacrificing much of the optical performance.