Light polarizing element and method of forming the same
AssigneeFurukawa Electric Co., Ltd.
InventorJunichi HASEGAWA
Life of this patent
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Abstract
A light polarizing element include: a first port waveguide; two second port waveguides; and a multi-mode interference waveguide optically connected to the first port waveguide and the two second port waveguides, the multi-mode interference waveguide having at least one slit formed therein, the at least one slit having a shape that enables the multi-mode interference wave guide to give different effective refractive indexes to respective mutually orthogonal polarized light waves input from the first port waveguide, thereby separating the mutually orthogonal polarized light waves, and that enables the separated mutually orthogonal polarized light waves to be output from the respective two second port waveguides.
Claims9
A light polarizing element comprising:
- a first port waveguide;
- two second port waveguides;
- and
- a multi-mode interference waveguide optically connected to the first port waveguide and the two second port waveguides,
- the multi-mode interference waveguide having at least one slit formed therein, the at least one slit having a shape that enables the multi-mode interference wave guide to give different effective refractive indexes to respective mutually orthogonal polarized light waves input from the first port waveguide, thereby separating the mutually orthogonal polarized light waves, and that enables the separated mutually orthogonal polarized light waves to be output from the respective two second port waveguides.
A light polarizing element comprising:
- a first port waveguide;
- two second port waveguides;
- and
- a rectangular multi-mode interference waveguide optically connected to the first port waveguide and the two second port waveguides, wherein
- the multi-mode interference waveguide has at least one slit formed therein, the at least one slit extending in a direction substantially parallel to a direction extending from the first port waveguide toward the two second port waveguides.
A method of forming a light polarizing element, comprising:
- forming shapes of a waveguide that includes a first port waveguide, two second port waveguides, and a multi-mode interference waveguide optically connected to the first port waveguide and the two second port waveguides;
- and
- forming at least one slit in the multi-mode interference waveguide, the at least one slit having a shape that enables the multi-mode interference wave guide to give different effective refractive indexes to respective mutually orthogonal polarized light waves input from the first port waveguide, thereby separating the mutually orthogonal polarized light waves, and that enables the separated mutually orthogonal polarized light waves to be output from the respective two second port waveguides.
Dependencies are inferred from the claim text.