title: Bragg grating writing in PMMA microstructured polymer optical fibers in less than 7 minutes.
abstract: We demonstrate fiber Bragg grating (FBG) writing in PMMA microstructured Polymer Optical Fibers (mPOFs) using UV Phase Mask technique with writing times shorter than 10 min. The shortest writing time was 6 minutes and 50 seconds and the longest writing time was 8 min and 50 sec. The FBGs were written in a 125 µm PMMA mPOF having 3-rings of holes, the reflection peaks were centred at 632.6 nm and have a reflectivity as high as 26 dB. We also demonstrate how the writing dynamics depends on the intensity of the writing beam.
authors.forename: Ivan-Lazar
authors.initials: IL
authors.lastname: Bundalo
authors.forename: Kristian
authors.initials: K
authors.lastname: Nielsen
authors.forename: Christos
authors.initials: C
authors.lastname: Markos
authors.forename: Ole
authors.initials: O
authors.lastname: Bang