Abstract
Tilted short-period fibre gratings (SPFG) couple the LP01 core mode to contra-directional core and cladding modes and can be used as optical fibre sensors and devices, mainly in reflection. Tilted long-period fibre gratings (LPFG) couple LP01 core mode to co-directional cladding and core modes and can be used as optical fibre sensors and devices in transmission. In this work we present the study and design of two optical devices based on both tilted SPFG and LPFG for mode conversion. The first proposed device is composed by a tilted LPFG and a tilted SPFG, both of them inscribed in the core of a few-modes fibre. Moreover it is used an optical circulator, which guides the light reflected in the second grating to the output. This optical fibre structure could be used in optical filtering and sensing due to the high sensitivity to the intrinsic or extrinsic perturbations of the spectral response in transmission and in reflection of the tilted LPFG and SPFG, respectively. By means of a proper structure it is possible to design an optical filter with two peaks due to different effects and to measure three different parameters. The another proposed device is composed by a LPFG and a 45-degrees tilted SPFG and based on a polarization mode conversion for filtering and sensing applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
