CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 10107 > Article
Presentation
28 April 2017 Silicon photonics waveguide array chemical sensor with integrated read-out (Conference Presentation)
Ricardo Janeiro, Raquel Flores, Jaime Viegas
Author Affiliations +
Proceedings Volume 10107, Smart Photonic and Optoelectronic Integrated Circuits XIX; 101070U (2017) https://doi.org/10.1117/12.2251939
Event: SPIE OPTO, 2017, San Francisco, California, United States
Abstract
Chemical sensing is usually achieved in photonics platforms by monitoring spectral changes on the output of a passive photonic element due to the modulation of the refractive index of core and cladding. Therefore, compact interferometers are usually sought for the embodiment of refractometer sensors. We present our work on refractive index sensors based on arrayed waveguide interference, which are built on a Silicon-On-Insulator (SOI) platform. A comparative study of two configurations, resonant and non-resonant is presented. In both cases the main design is based on a set of closely placed single mode waveguides. The distance between waveguides is such that directional coupling occurs. Moreover, when the distance between the waveguides is small comparatively to the transversal exponential decay length of the eigenmode of the waveguide, there is an enhancement effect of the electric field in the region between the waveguides, as usually seen for slotted waveguides. The reported sensors include multiple parallel slotted waveguides which are the core of the sensor. Non-resonant configuration incorporates straight waveguides from which the output can be directly imaged onto a CCD array for direct sensor read-out, while the resonant layout presents a set of concentric racetrack waveguides designed for light extended lifetime, enhancing the sensor sensitivity. A top polymer cladding is used to encapsulate the waveguides providing a permeable low index material. This cladding material acts as the transducer element, changing its optical properties when in contact with a chemical of interest, therefore allowing for high sensitivity and chemical selectivity.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Ricardo Janeiro, Raquel Flores, and Jaime Viegas "Silicon photonics waveguide array chemical sensor with integrated read-out (Conference Presentation)", Proc. SPIE 10107, Smart Photonic and Optoelectronic Integrated Circuits XIX, 101070U (28 April 2017); https://doi.org/10.1117/12.2251939
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Waveguides
Sensors
CCD image sensors
Cladding
Photonics
Chemical elements
Chemical fiber sensors
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top