Patent ID: 9325142
Filing Date: 2016-04-26
CPC Classification: G02B,H01S

Claim Text:
1. An optical fiber configured to propagate a light beam at a predetermined wavelength at least in an LP01 mode and an LP02 mode, wherein a dopant that changes a Young's modulus is doped to at least a part of a waveguide region in a cladding through which the light beam at the predetermined wavelength is propagated and to a region in a core in which an intensity of the light beam in the LP01 mode is greater than an intensity of the light beam in the LP02 mode, and at least a part of a Young's modulus in the waveguide region in the cladding is smaller than a Young's modulus in the region in the core in which the intensity of the light beam in the LP01 mode is greater than the intensity of the light beam in the LP02 mode.