Abstract
A novel Mach-Zehnder interferometer based on a fiber multimode interference structure combined with a long-period fiber grating (LPG) is proposed. The multimode interference is achieved through the use of a MMF section spliced between two single-mode fibers, with a length adjusted to couple a fraction of light into the cladding modes. A LPG placed after the MMF couples light back into the fiber core, completing the Mach-Zehnder interferometer. This novel configuration was demonstrated as a bending sensor.
Original language | British English |
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Pages (from-to) | 3074-3076 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 32 |
Issue number | 21 |
DOIs | |
State | Published - 1 Nov 2007 |