Enhancing optical field intensities in Gaussian-profile fiber Bragg gratings
| Autor: | Sebastian A. Schulz, Jeremy Upham, Marie-Claude N. Dicaire, Israel De Leon, Edwin Ma, Robert W. Boyd, Dan Grobnic, Sangeeta Murugkar |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Transmission peaks Bistability Strong field business.industry Physics::Optics Nonlinear optics Nonlinear optical response Group delay Optical field Long-period fiber grating Graded-index fiber Atomic and Molecular Physics and Optics Optics Fiber Bragg grating Incoming light Field intensity Fiber Bragg gratings Optoelectronics Photothermally Absorption (electromagnetic radiation) business Self-phase modulation Gaussian profiles Optical field intensity |
| Popis: | Gaussian profile fiber Bragg gratings exhibit narrow-bandwidth transmission peaks with significant group delay at the edge of their photonic bandgap. We demonstrate group delays ranging from 0.2 to 5.6 ns from a 1.2 cm structure. Simulations suggest such a device would be capable of enhancing the field intensity of incoming light by a factor of 800. Enhancement is confirmed by photothermally induced bistability of these peaks even at sub-milliwatt input powers with as much as a four-fold difference in the magnitude of their responses. The strong field intensities of these modes could significantly enhance desired nonlinear optical responses in fiber, provided the impact of absorption is addressed. © 2014 Optical Society of America. |
| Databáze: | OpenAIRE |
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