Mirror cavity MMI-coupled photonic wire resonator in SOI

We propose a new waveguide resonator device with a mirror cavity and a multimode interference (MMI) coupler. We present simulation results for the silicon wire MMI coupler with suppressed reflections and its use as a coupling element in the resonator cavity, built on the silicon-on-insulator waveguide platform. Tapering structures used in the reflection suppression were optimized, and the wavelength dependency of a conventional MMI was compared to that of the MMI with reflection suppression. Two-mirror MMI coupled resonator was studied using finite difference time domain simulation by both pulse and continuous wave excitation. The optimal resonator has a very small footprint of 3 μm × 29.7 μm, with a quality factor of 774.

[1]  E. R. Thoen,et al.  Ultra-compact Si-SiO2 microring resonator optical channel dropping filters , 1998, IEEE Photonics Technology Letters.

[2]  E.C.M. Pennings,et al.  Optical multi-mode interference devices based on self-imaging: principles and applications , 1995 .

[3]  Wenhui Wang,et al.  Design and fabrication of multimode interference coupler with strong confinement structure on silicon-on-insulator , 2004 .

[4]  A. Yariv.  Universal relations for coupling of optical power between microresonators and dielectric waveguides , 2000 .

[5]  Atilla Aydinli,et al.  High-Q silicon-on-insulator optical rib waveguide racetrack resonators. , 2005, Optics express.

[6]  Klaus Petermann,et al.  Theoretical and experimental investigation of optical couplers in SOI , 1997, Photonics West.

[7]  S. Janz,et al.  Design of polarization-insensitive ring resonators in silicon-on-insulator using MMI couplers and cladding stress engineering , 2006, IEEE Photonics Technology Letters.

[8]  Lm Luc Augustin,et al.  Reduced reflections from multimode interference couplers , 2006 .

[9]  Siegfried Janz,et al.  High bandwidth SOI photonic wire ring resonators using MMI couplers. , 2007, Optics express.

[10]  Siegfried Janz,et al.  Polarization-insensitive MMI-coupled ring resonators in silicon-on-insulator using cladding stress engineering , 2007, SPIE OPTO.

[11]  Chenglin Xu,et al.  Theoretical approach to a polarization-insensitive single-mode microring resonator. , 2004, Optics express.

[12]  F. Coppinger,et al.  Compact multimode interference couplers in silicon-on-insulator technology , 1997, CLEO '97., Summaries of Papers Presented at the Conference on Lasers and Electro-Optics.

[13]  Jingbo Cai,et al.  New ring resonator configuration using hybrid photonic crystal and conventional waveguide structures. , 2004, Optics express.

[14]  Graham T. Reed,et al.  Polarization-independent optical racetrack resonators using rib waveguides on silicon-on-insulator , 2004 .

[15]  Oskar Painter,et al.  Nonlinear response of silicon photonic crystal microresonators excited via an integrated waveguide and fiber taper. , 2005, Optics express.