Abstract
Fiber Bragg gratings in multicore fibers have significant potential as compact and robust filters for research and commercial applications. With the aid of an innovative, flat-fielded Mach-Zehnder interferometer, we demonstrate deep (>30 dB) narrow (100pm at 3 dB; 90pm at 10 dB) notches in the outer 6 cores of a 7-core fiber at a constant wavelength ( ± 15pm). This is a crucial step in the development of FBGs operating within multimode fibers that carry an arbitrary number of spatial modes.
Original language | English |
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Pages (from-to) | 31575-31581 |
Number of pages | 7 |
Journal | Optics Express |
Volume | 22 |
Issue number | 25 |
DOIs | |
Publication status | Published - 15 Dec 2014 |
Externally published | Yes |