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Title: Narrow-band fibre reflector based on a fibre Bragg grating reflection interferometer

Journal Article · · Quantum Electronics (Woodbury, N.Y.)
DOI:https://doi.org/10.1070/QEL16695· OSTI ID:23000321

Narrow-band filtering in reflected light using a reflection interferometer with a fibre Bragg grating (FBG) as its back mirror is demonstrated for the first time. The reflection interferometer is made in SMF-28e single-mode fibre, and the faces of its front mirror, which includes a thin metallic film, differ in reflectance. The reflection bandwidth of a test sample is 0.5 pm (62 MHz) at a wavelength of 1556 nm (Q-factor of 3 × 10{sup 6}), its maximum reflectance is 0.21, and its contrast is 10{sup 2}. The use of a narrow-band FBG instead of thin-film broadband mirrors allows spectral selection to be significantly improved owing to an increase in the length of the interferometer base. (paper)

OSTI ID:
23000321
Journal Information:
Quantum Electronics (Woodbury, N.Y.), Vol. 48, Issue 8; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
Country of Publication:
United States
Language:
English