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US 2002/0154403 A1Published application
Photonic crystal optical isolator
OwnerDonald M. Trotter, JR.inventor
Life of this patent
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Abstract
An optical isolator includes a magneto-optical substrate exhibiting the Faraday effect and a pair of photonic crystal polarizers formed on opposite surfaces of the magneto-optical substrate and oriented relative to each other. The photonic crystal polarizers permit propagation of a selected polarization component of an input beam.
Claims12
An optical isolator, comprising:
- a magneto-optical substrate exhibiting the Faraday effect;
- and
- a pair of photonic crystal polarizers formed on opposite surfaces of the magneto-optical substrate and oriented at an angle relative to each other, the photonic crystal polarizers permitting propagation of a selected polarization component of an input beam.
An optical isolator, comprising:
- a magneto-optical substrate exhibiting the Faraday effect;
- and
- a pair of photonic crystal polarizers formed on opposite surfaces of the magnetooptical substrate and oriented at an angle relative to each other, each photonic crystal polarizer including two materials with different optical constants arranged in alternating layers, each photonic crystal polarizer permitting propagation of a selected polarization component of an input beam.
An optical isolator, comprising:
- a Faraday rotator substrate with a 45° rotation;
- a photonic crystal polarizer formed on an input side of the Faraday rotator substrate;
- a second photonic crystal polarizer formed on an output side of the Faraday rotator substrate, the second photonic crystal polarization splitter oriented at an angle of 45° relative to the first photonic crystal polarizer.
A method for fabricating an integrated optical isolator, comprising:
- forming a periodic pattern on both surfaces of a magneto-optical substrate exhibiting the Faraday effect;
- and
- depositing alternating layers of two materials having different optical constants on both surfaces of the magneto-optical substrate.
Dependencies are inferred from the claim text.