Analysis of sharpness Fano resonance curve based on eye-like resonators

Xiao-wei Lou; Jin-jiang Cui; Ning-ning Dong; Jian-gen Xu; Hui-ming Tan

doi:10.1117/12.2073595

13 November 2014 Analysis of sharpness Fano resonance curve based on eye-like resonators

Xiao-wei Lou, Jin-jiang Cui, Ning-ning Dong, Jian-gen Xu, Hui-ming Tan

Proceedings Volume 9277, Nanophotonics and Micro/Nano Optics II; 92771T (2014) https://doi.org/10.1117/12.2073595
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

For given intrinsic losses of a single ring resonator sensor, there exists the maximum sharpness, at the extinction ratio of -6dB. However, the maximum sharpness of a single ring resonator sensor is sensitive for the coupling coefficient. In order to obtain the maximum sharpness, the coupling region of the single rings must have a higher precision of manufacture. To solve this problem, this paper proposed eye-like resonator which is formed by a ring resonator (named inner loop) embedd in the dual-bus-coupled ring resonator (named outer loop). Eye-like resonators can generate the asymmetric Fano-resonance spectra of the drop port, numerical calculation of spectra on the drop port is utilized by the transfer matrix method. As the round trip loss varies, the maximum value of sharpness and the corresponding transmission at the resonant point can be obtained by tuning the phase ratio of the outer loop to the inner loop. The maximum value of sharpness increases with the round trip loss, as the outer loop and inner loop coupling coefficient changing, the maximum value of sharpness of Fano-resonance change slowly in a wide range. As the round trip loss and coupling coefficients of the outer loop and inner loop varies, the corresponding transmission at the resonant point remains almost the same, about -6dB. The sharpness of Fano resonant peak is insensitive for the coupling coefficients, which can reduce the requirements of manufacture of coupling region.

Citation Download Citation

Xiao-wei Lou, Jin-jiang Cui, Ning-ning Dong, Jian-gen Xu, and Hui-ming Tan "Analysis of sharpness Fano resonance curve based on eye-like resonators", Proc. SPIE 9277, Nanophotonics and Micro/Nano Optics II, 92771T (13 November 2014); https://doi.org/10.1117/12.2073595

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Resonators

Microrings

Manufacturing

Sensors

Waveguides

Biomedical optics

Eye

Show All Keywords

Keywords/Phrases

Search In:

Publication Years