Spectral interference between two LP modes and modulation of the spectrum of a low-coherence source

Petr Hlubina

doi:10.1117/12.301328

1 January 1998 Spectral interference between two LP modes and modulation of the spectrum of a low-coherence source

Petr Hlubina

Proceedings Volume 3320, Tenth Polish-Czech-Slovak Optical Conference: Wave and Quantum Aspects of Contemporary Optics; (1998) https://doi.org/10.1117/12.301328
Event: Tenth Polish-Czech-Slovak Optical Conference: Wave and Quantum Aspects of Contemporary Optics, 1996, Karpacz, Poland

Abstract

The mutual interference of two linearly polarized (LP) modes in the spectral domain has been demonstrated experimentally at the output of a two-mode optical fiber excited by two low- coherence sources which differ substantially from each other by the width of the spectrum, and whose coherence lengths are shorter than the optical path difference between both LP modes. The spectral interference between two LP modes, which shows up for the first source the wavelength-independent and for the second source the wavelength-dependent periodic modulation of the source spectrum, serves as an illustration of the feasibility of a novel experimental method utilizing a high-resolution spectrometer in the evaluation of the spectral dependence of the group optical path difference between both modes. Moreover, it has been shown that the spectral analysis performed across the output modal pattern of the two-mode optical fiber leads to spectral modulations in which the effects of both polarization properties and overlaps of both LP modes are inscribed.

Citation Download Citation

Petr Hlubina "Spectral interference between two LP modes and modulation of the spectrum of a low-coherence source", Proc. SPIE 3320, Tenth Polish-Czech-Slovak Optical Conference: Wave and Quantum Aspects of Contemporary Optics, (1 January 1998); https://doi.org/10.1117/12.301328

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