SLANT-TYPE FIBER GRATING

One embodiment of the present disclosure relates to an SFG (slanted fiber grating) that can easily realize a high-performance gain equalizer. The SFG includes an optical fiber comprised of silica-based glass and including a core, a first cladding containing a photosensitive material, and a second cl...

Full description

Saved in:
Bibliographic Details
Main Authors HASEGAWA, Takemi, SHIOZAKI, Manabu, NAGANO, Shigehiro, KINUGASA, Jun
Format Patent
LanguageEnglish
French
German
Published 11.09.2024
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:One embodiment of the present disclosure relates to an SFG (slanted fiber grating) that can easily realize a high-performance gain equalizer. The SFG includes an optical fiber comprised of silica-based glass and including a core, a first cladding containing a photosensitive material, and a second cladding. A specific section between two different points arranged along a fiber axis in the optical fiber is configured with a first region, a pair of second regions, and a third region. The first region includes a slanted Bragg grating provided in a region as the first cladding. The pair of second regions are arranged to sandwich the first region. The third region is disposed to sandwich both the first region and the pair of second regions. An MFD at a wavelength of 1.55 µm in the third region is smaller than an MFD at a wavelength of 1.55 µm in the first region.
Bibliography:Application Number: EP20190880321