Publishing house Radiotekhnika

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Fiber-Optic interferometer Based on Mode Interference at a Splice of Standard and Small-Core Fibers



A fiber interferometer based on interaction between core and cladding modes that are coupled at splices of fibers having unmatched core mode profiles is demonstrated. The interfero¬meter is formed by splicing a section of small-core fiber that is single-mode at 630 nm between two standard fibers. The transmission spectra of the fiber interferometer are measured for diffe¬rent lengths of the inserted fiber section. The spectra reveal interference fringes having envelopes with two broad dips, whose positions and widths are independent of the interferometer length
June 24, 2020
May 29, 2020

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