Selective mode excitation and discrimination of four-core homogeneous coupled multi-core fiber | Zendy

Yasuo Kokubun | Zendy; Toshinori Komo | Zendy; Katsuhiro Takenaga | Zendy; Shoji Tanigawa | Zendy; Shoichiro Matsuo | Zendy

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Selective mode excitation and discrimination of four-core homogeneous coupled multi-core fiber

Author(s) -

Yasuo Kokubun,

Toshinori Komo,

Katsuhiro Takenaga,

Shoji Tanigawa,

Shoichiro Matsuo

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.00b905

Subject(s) - optics , core (optical fiber) , excited state , homogeneous , wavelength , excitation , extinction ratio , beam (structure) , materials science , physics , atomic physics , quantum mechanics , thermodynamics

Coupled modes of homogeneous coupled multi-core fiber are selectively excited and discriminated utilizing the difference of equivalent propagation angle. To quantatively evaluate the extinction ratio (selectivity) of adjacent modes, a new mode discrimination technique is developed by measuring the visibility of far-field patterns under small change of wavelength of the launching beam. The peak angles of discriminated far-field patterns show a strong correlation with the incident angle of the launching beam, which means that the coupled modes were selectively excited and discriminated.

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