Micro-Optic Mach-Zehnder Interferometric Sensor for UV Detection Using Photochromic Dye
A micro-optic Mach-Zehnder interferometric UV sensor that consists of a polymer film containing a photochromic dye is presented. Spirooxazine, which is a UV-sensitive material having high sensitivity and fast response and recovery was used as the photochromic dye. Sensor characteristics were analyzed with polymer films containing 0.5, 1.0, and 1.5 wt% of spirooxazine. When the sensor was irradiated with UV light of intensity ranging from 0 to 80 mW/cm2 for 5 s, the wavelength of the highest extinction ratio was found to shift by 0.033, 0.039, and 0.0435 nm/mW for spirooxazine concentrations of 0.5, 1.0, and 1.5 wt%, respectively. Also, the recovery time was less than 30 s. The wavelength shift of the highest extinction ratio shows that the proposed sensor has a linear response. Although the sensitivity of the proposed micro-optic Mach-Zehnder interferometric UV sensor is low, it has a linear response to even high intensity UV radiation and does not become saturated.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 2011-02-01
More about this publication?
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites