Dispersion-shifted fiber for optical parametric amplifier
First Claim
1. A dispersion-shifted fiber for an optical parametric amplifier, which comprises a core, an inner clad, and an outer clad, and has a nonlinear coefficient of 80 W−
- 1km−
1 or more, an effective area of 10.5 μ
m2 or less, and a zero-dispersion wavelength of 1,580 to 1,600 nm.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a dispersion-shifted fiber for an optical parametric amplifier. The dispersion-shifted fiber is a silica-based optical fiber and has a large nonlinear coefficient and a small effective area. The dispersion-shifted fiber also reduces a bending loss and a splice loss due to a mode field diameter difference between it and a conventional single mode fiber. For this, the dispersion-shifted fiber comprises a rectangular core with a very small radius and a high refractive index, a depressed inner clad, and an outer clad with a ring. The core and/or the inner clad are/is doped with a heavy metal.
24 Citations
11 Claims
-
1. A dispersion-shifted fiber for an optical parametric amplifier, which comprises a core, an inner clad, and an outer clad, and has a nonlinear coefficient of 80 W−
- 1km−
1 or more, an effective area of 10.5 μ
m2 or less, and a zero-dispersion wavelength of 1,580 to 1,600 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- 1km−
-
11. A dispersion-shifted fiber for an optical parametric amplifier, which has a nonlinear coefficient of 80 W−
- km−
1 or more, an effective area of 10 to 30 μ
m2, a zero-dispersion wavelength of 1,580 to 1,600 nm, and a dispersion slope of 0.014 ps/nm2/km or less.
- km−
Specification