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Wavelength-Dependent Model of a Ring Resonator Sensor Excited by a Directional Coupler

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TLDR
In this paper, the spectral characteristics of a ring resonator made of Si photonic wires are modeled using mode expansion of supermodes of the directional coupler, and the influence of the coupling coefficient, loss factor and waveguide dispersion on the spectral features are analyzed in detail.
Abstract
The spectral characteristics of a ring resonator made of Si photonic wires are modeled using mode expansion of supermodes of the directional coupler. The influence of the coupling coefficient, loss factor and waveguide dispersion on the spectral features are analyzed in detail. The model is then compared with the experimental data of a ring resonator designed for sensing purposes. The model that includes a wavelength dependence on coupling length reproduces the large variations of the envelope of the experimental spectrum, when coupling coefficient cover its full range from 0 to 1. Fitting parameters explain the details of the experimental spectrum and contribute to the sensor optimization, as well as illustrating general guidelines for ring resonator design.

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Journal ArticleDOI

Field enhancement assisted graphene-based microring modulator for high modulation depth

TL;DR: In this article, the authors optimized the graphene coverage in a microresonator for the design of an efficient modulator by using a combination of graphene induced losses and phase shift.
Journal ArticleDOI

Dynamic computational optical fringe mitigation in tunable laser absorption spectroscopy.

TL;DR: This work introduces a computational approach to mitigate the adverse effects of optical fringing without hardware modifications by decomposing the fringe background into component etalons that can be addressed according to their individual characteristics.
Journal ArticleDOI

Investigation of thermal effects in a resonance condition of microfibre double-knot resonators as high-order filter

TL;DR: In this paper, a double-knot microfibre resonator which uses heat for optical path correction is introduced to increase the finesse of the resonator, which results in an unchanged free spectral range of 715 pm, a quality factor of 20 000, FWHD of 85 pm and a finese of 9.5.
References
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Book

Numerical Recipes in FORTRAN

TL;DR: The Diskette v 2.04, 3.5'' (720k) for IBM PC, PS/2 and compatibles [DOS] Reference Record created on 2004-09-07, modified on 2016-08-08.
Journal ArticleDOI

Light waves in thin films and integrated optics.

P. K. Tien
- 01 Nov 1971 - 
TL;DR: The purpose of this paper is to review in some detail the important development of this new and fascinating field, and to caution the reader that the technology involved is difficult because of the smallness and perfection demanded by thin-film optical devices.
Journal ArticleDOI

Losses in single-mode silicon-on-insulator strip waveguides and bends.

TL;DR: The fabrication and accurate measurement of propagation and bending losses in single-mode silicon waveguides with submicron dimensions fabricated on silicon-on-insulator wafers with record low numbers can be used as a benchmark for further development of silicon microphotonic components and circuits.
Journal ArticleDOI

Silicon-on-Insulator microring resonator for sensitive and label-free biosensing

TL;DR: This work proposes a label-free biosensor based on microring cavities in Silicon-on-Insulator (SOI) that fits in an area below 10x10mum(2), and uses the avidin/biotin high affinity couple to demonstrate good repeatability and detection of protein concentrations down to 10ng/ml.
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