Polarization-maintaining optical waveguide and method for forming same
OwnerMakoto Fujimakiinventor
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Abstract
The present invention provides fabrication methods of a polarization-maintaining optical waveguide, which forms a polarization-maintaining structure in an optical waveguide (including an optical fiber) easily. The method forms one or more stress-applying parts in a cladding of an optical waveguide utilizing density change induced in the cladding by implanting ions accelerated with high acceleration energy into the cladding. If necessary, changing the acceleration energy of the ion beam, using masks, rotating the optical waveguide against the ion beam, implanting ions from various directions, and/or using various kinds of ions are preferable.
Claims19
A polarization-maintaining optical waveguide comprising:
- one or more stress-applying parts in a cladding of the optical waveguide formed by implanting accelerated ions into the cladding;
- and
- a core of the optical waveguide in which the stress due to said stress-applying part is applied.
A fabrication method of a polarization-maintaining optical waveguide comprising the steps of:
- generating accelerated ions;
- and
- forming one or more stress-applying parts in a cladding of the optical waveguide that apply a stress to a core of the optical waveguide, by implanting said accelerated ions into said cladding.
A polarization-maintaining optical waveguide fabricated by the fabrication method of the polarization-maintaining optical waveguide comprising the steps of generating accelerated ions, and forming one or more stress-applying parts in a cladding of the optical waveguide that apply a stress to a core of the optical waveguide, by implanting said accelerated ions into said cladding.
Dependencies are inferred from the claim text.