Back to results
US 10,564,347 B2Granted
Optical fiber and light source device
AssigneeSumitomo Electric Industries, Ltd.
InventorYoshinori Yamamoto
Life of this patent
Estimating the term…
Abstract
An optical fiber made of silica glass includes a core having a maximum refractive index n1, a depressed portion surrounding the core and having an average refractive index n2, and cladding surrounding the depressed portion and having an average refractive index n3. In the optical fiber, n1>n3>n2. The optical fiber has a local maximum value of chromatic dispersion within a wavelength range of 1530 nm to 1610 nm, and the local maximum value is −2 ps/nm/km or greater and below 0 ps/nm/km.
Claims11
An optical fiber made of silica glass, comprising:
- a core having a maximum refractive index n1;
- a depressed portion surrounding the core and having an average refractive index n2;
- and
- cladding surrounding the depressed portion and having an average refractive index n3,
- wherein n1>n3>n2,
- wherein the optical fiber has a local maximum value of chromatic dispersion within a wavelength range of 1530 nm to 1610 nm, and the local maximum value is −2 ps/nm/km or greater and below 0 ps/nm/km, and wherein
- a dispersion curve at a wavelength at which chromatic dispersion becomes maximal within the wavelength range of 1530 nm to 1610 nm is −0.0003 ps/nm3/km or greater and 0 ps/nm3/km or smaller.
4 more elements
Dependencies are inferred from the claim text.