Polarization independent optical phase modulator
First Claim
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1. A polarisation independent optical phase modulator, comprising:
- first and second substrates;
a reflector disposed between the first and second substrates;
a waveplate, disposed between the first substrate and the reflector, for producing a retardation of (n+1)λ
/4, where n is an integer greater than or equal to zero and λ
is a predetermined wavelength of visible light, and having an optic axis; and
a polarisation dependent electrooptic layer, disposed between the waveplate and the first substrate, for modulating the phase of light having a polarisation substantially at 45 degrees to the optic axis of the waveplate;
the polarisation independent optical phase modulator having a plurality of picture elements, each of which has at least one transparent first electrode disposed between the first substrate and the electrooptic layer and a plurality of second electrodes disposed between the second substrate and the electrooptic layer, wherein each of the second electrodes are elongate and parallel.
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Abstract
A polarization independent optical phase modulator comprises first and second substrates. A reflector is disposed between the first and second substrates and a quarterwave plate is disposed between the reflector and the first substrate. A polarization dependent electrooptic layer is disposed between the quarterwave plate and the first substrate. The quarterwave plate has an optic axis which is aligned at 45 degrees to the polarization whose phase is modulated by the electrooptic layer.
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19 Claims
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1. A polarisation independent optical phase modulator, comprising:
- first and second substrates;
a reflector disposed between the first and second substrates;
a waveplate, disposed between the first substrate and the reflector, for producing a retardation of (n+1)λ
/4, where n is an integer greater than or equal to zero and λ
is a predetermined wavelength of visible light, and having an optic axis; and
a polarisation dependent electrooptic layer, disposed between the waveplate and the first substrate, for modulating the phase of light having a polarisation substantially at 45 degrees to the optic axis of the waveplate;the polarisation independent optical phase modulator having a plurality of picture elements, each of which has at least one transparent first electrode disposed between the first substrate and the electrooptic layer and a plurality of second electrodes disposed between the second substrate and the electrooptic layer, wherein each of the second electrodes are elongate and parallel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- first and second substrates;
Specification