Abstract
We report on the detailed analyses of mode coupling from fiber core to cladding in
excessively tilted fiber gratings (ETFGs). Cladding modes responsible for the typical dual peak
pairs in the transmission spectrum of ETFGs are identified with phase matching condition, which
suggests two set of dual peak pairs generated from coupling to cladding modes with even and
odd azimuthal order. The polarization dependence of those dual peak pairs are also investigated
by calculating the coupling coefficients of cladding modes for two orthogonal polarizations.
With the calculated coupling coefficients, the measured polarization dependent spectra can be
reproduced numerically.
excessively tilted fiber gratings (ETFGs). Cladding modes responsible for the typical dual peak
pairs in the transmission spectrum of ETFGs are identified with phase matching condition, which
suggests two set of dual peak pairs generated from coupling to cladding modes with even and
odd azimuthal order. The polarization dependence of those dual peak pairs are also investigated
by calculating the coupling coefficients of cladding modes for two orthogonal polarizations.
With the calculated coupling coefficients, the measured polarization dependent spectra can be
reproduced numerically.
| Original language | English |
|---|---|
| Pages (from-to) | 1076-1083 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 28 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 6 Jan 2020 |
Bibliographical note
© 2020 Optical Society of America under the terms of the OSA Open Access Publishing AgreementFunding: National Natural Science Foundation of China (11574070, 11874126, 51803037, 61805046); Leading Talents Program of Guangdong Province.