Influence of the waist diameters on transmission characteristics and strain sensitivity of microtapered long-period fiber gratings
Abstract
Transmission characteristics of microtapered long-period fiber gratings (MTLPGs) and their strain and temperature sensitivities with variations in the waist diameters are investigated theoretically and experimentally. Transmission characteristics of MTLPGs strongly depend on the waist diameter of the tapered optical fiber (TOF) because of the modification of the effective index difference between the core and the cladding modes. Based on the photoelastic effect, the resonant wavelengths of MTLPGs with variations in strain shift to shorter wavelengths. The strain sensitivity of the MTLPG with a waist diameter of 25 μm is improved by a factor of 20 compared with that of a 125 μm long-period fiber grating. The temperature sensitivities of MTLPGs are also enhanced by reducing the waist diameter of the TOF.
Additional Information
© 2013 Optical Society of America. Received May 16, 2013; revised June 24, 2013; accepted June 26, 2013; posted June 27, 2013 (Doc. ID 189391); published July 22, 2013. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education, Science and Technology (2012R1A1A2000999).Attached Files
Published - ol-38-15-2669.pdf
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Additional details
- Eprint ID
- 41047
- Resolver ID
- CaltechAUTHORS:20130903-095253243
- Basic Science Research Program
- National Research Foundation of Korea (NRF)
- 2012R1A1A2000999
- Ministry of Education, Science and Technology
- Created
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2013-09-16Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field