Smoothing of the spectrum of fibre Bragg gratings in the Lloyd-interferometer recording scheme

Journal Article · Wed May 26 00:00:00 EDT 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N03ABEH014255· OSTI ID:21471401

Abdullina, S R; Vlasov, Aleksandr A; Babin, Sergei A ^[1]

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1. Novosibirsk State University, Novosibirsk (Russian Federation)

The possibility of apodization of fibre Bragg gratings (FBGs) recorded in the region of interference of the two parts of a Gaussian beam in a Lloyd interferometer is considered. The reflection spectra of FBGs are numerically simulated for different parameters of the recording beam and its displacement with respect to the dividing axis in the interferometer. Aconsiderable suppression of sidelobe resonances in the FBG spectrum during the displacement of the beam centre with respect to the dividing axis by half the beam radius is predicted and experimentally demonstrated. It is shown that this is caused by the equating of the mean value of the refractive index in the FBG region. (fibres)

• OSTI ID: 21471401
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 40, Issue 3; Other Information: DOI: 10.1070/QE2010v040n03ABEH014255; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAMS
BRAGG REFLECTION
GRATINGS
INTERFERENCE
INTERFEROMETERS
OPTICAL FIBERS
REFRACTIVE INDEX
RESONANCE
SIMULATION
SPECTRA
FIBERS
MEASURING INSTRUMENTS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
REFLECTION