Core-cladding mode coupling of tilted long period fiber gratings in dual-mode fibers
| Autor: | Haisu Li, Yuean Mi, Wei Jian, Guobin Ren, Yu Liu, Bofeng Zhu, Shuisheng Jian |
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| Rok vydání: | 2017 |
| Předmět: |
Mode scrambler
Mode volume Materials science business.industry Single-mode optical fiber Physics::Optics 02 engineering and technology Long-period fiber grating Cladding mode Cladding (fiber optics) 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics 020210 optoelectronics & photonics Optics 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Physical and Theoretical Chemistry Radiation mode business Leaky mode |
| Zdroj: | Optics Communications. 393:238-243 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2017.02.062 |
| Popis: | We present a theoretical study on the mode coupling between core modes and cladding modes of the tilted long period fiber grating (TLPFG) in dual-mode fiber. The TLPFG can be applied as mode filters at several specific wavelengths. Using the full vector complex coupled mode theory, numerical simulation shows the maximum coupling coefficients between core modes (LP01 and LP11) and cladding modes can be found near the tilted angle of 86°. The transmission peaks of modes coupling are sensitive to the titled angle. Furthermore, several peak amplitude between the LP11 mode and same azimuthal order modes increase with the growth of the titled angle. With the band-stop characteristic of specific mode, the TLPFG written in dual-mode fiber could be exploited as mode filters. |
| Databáze: | OpenAIRE |
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