Abstract
Phase mask writing method is a common method for fiber grating fabrication. According to the near-field diffraction theory, the influence of incident angle on the diffraction field is analyzed when the UV laser light is obliquely incident on the phase mask. Based on the coupled-mode theory of inclined grating, the transmission matrix method is used to analyze the influence of incident angle of UV laser light on the spectral characteristics of the grating. The calculation results show that the incident angle increases and the center reflection wavelength of the gratings shifts to the longer wavelength, meanwhile the reflectivity decreases. To ensure that the grating wavelength drift less than 0.2nm, the incident angle should be controlled less than 0.92 degrees.
Sign-in/Register to access full text options 
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 callMore From: IOP Conference Series: Materials Science and Engineering
Disclaimer: 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.
