Ms. Natnicha Koompai Profile

Natnicha Koompai

at Kasetsart Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 2 April 2020 Presentation

Theoretical investigation of silicon nitride waveguides for optical gas sensors in agricultural applications (Conference Presentation)

Natnicha Koompai, Pichet Limsuwan, Xavier Le Roux, Laurent Vivien, Delphine Marris-Morini, Papichaya Chaisakul

Proceedings Volume 11364, 113641S (2020) https://doi.org/10.1117/12.2555458

Read Abstract +

Application of photonics for smart farming could have a tremendous impact on the economy and the well-being of world population. Silicon Photonics should be a promising platform to apply the photonic technologies at reasonable cost in agricultural-based countries for their economic agriculture products. Among several group-IV materials, Silicon Nitride (SiN) is one of the most interesting Si-compatible materials suitable for on-chip spectroscopic sensing in the near- and mid-IR region as it has a relatively large transparent windows and a sufficiently-high refractive index of ~ 2. In this presentation, we will discuss the use of Si3N4 on SiO2 waveguides for a wideband spectroscopic sensing. The target design would include optical wavelength from 2.5 µm to 3.5 µm, in which several agriculturally-important gas molecules can be detected such as H2O (water vapor), CO2 (carbon dioxide), N2O (Nitrous oxide), NH3 (Ammonia), C2H4 (Ethylene), CH4 (Methane), and the spectral range is also within the transparent windows of Si3N4 on SiO2 waveguide. Significantly, we focus our effort on achieving a waveguide structure that can support single-mode optical propagation for a broad spectral range within 2.5-3.5 µm, and at the same time, can maintain a good sensing performance for multi-gas spectroscopic sensing despite the compromised evanescent field confinement values owing to the wideband design. We investigated the detection performance in term of compactness, polarization dependence, detection limit, and fabrication tolerance.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years