Open AccessA self-coupling multi-port microcoil resonator
Author(s) -
Rand Ismaeel,
Timothy Lee,
F. Al-Saab,
Yongmin Jung,
Gilberto Brambilla
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.008568
Subject(s) - microcoil , microfiber , resonator , materials science , optics , port (circuit theory) , rat race coupler , refractive index , optoelectronics , coupling (piping) , whispering gallery wave , hybrid coupler , power dividers and directional couplers , electromagnetic coil , physics , electrical engineering , engineering , composite material
A new type of self-coupling multi-port microcoil resonator using a microfiber coupler is presented. The microresonators, a simple combination of a microfiber coupler and microcoil resonator, were fabricated by coiling a four port microfiber coupler around a low index support rod to induce optical resonance via coupling between adjacent turns. Light propagates along the coil whilst the beating between the supermodes of the coupler is still present, giving an increased extinction ratio and an output spectrum strongly dependent on the microfiber coupler diameter. The multiport microcoil resonator was embedded in a low refractive index polymer to improve its robustness and the polarization dependence was further analyzed.