Fibre coupled mirror providing a wavelength independent rotation of the polarisation state of reflected light
First Claim
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1. An optical device for producing a polarisation rotation of an optical signal, the device comprising:
- a birefringent material for, in use, splitting the optical signal into two orthogonal polarisation component signals;
a polarization rotating means for, in use, rotating each polarisation component signal by a predetermined amount, and wherein the device is arranged in a manner such that, in use, the two rotated polarisation component signals are being combined by way of the birefringent material for providing the predetermined polarisation rotated optical signal.
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Abstract
An optical device for producing a polarisation rotation of an optical signal, the device comprising: a birefringent material for, in use, splitting the optical signal into two orthogonal polarisation component signals; a polarisation rotating means for, in use, rotating each polarisation component signal by a predetermined amount, and wherein the device is arranged in a manner such that, in use, the two rotated polarisation component signals are being combined by way of the birefringent material for providing the predetermined polarisation rotated optical signal.
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Citations
13 Claims
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1. An optical device for producing a polarisation rotation of an optical signal, the device comprising:
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a birefringent material for, in use, splitting the optical signal into two orthogonal polarisation component signals;
a polarization rotating means for, in use, rotating each polarisation component signal by a predetermined amount, and wherein the device is arranged in a manner such that, in use, the two rotated polarisation component signals are being combined by way of the birefringent material for providing the predetermined polarisation rotated optical signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for producing a predetermined polarisation rotations of an optical signal, the method comprising the steps of:
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(a) splitting the optical signal into two orthogonal polarisation component signals utilising a birefringent material;
(b) rotating each polarisation component signal by nominally predetermined polarisation rotation utilising a polarisation rotation means; and
(c) combining the two rotated polarisation component signals utilising the birefringent material. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A optical telecommunications system including an optical device for producing a polarisation rotation of an optical signal transmitted by said system, the device comprising:
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a birefringent material for, in use, splitting the optical signal into two orthogonal polarisation component signals;
a polarisation rotating means for, in use, rotating each polarisation component signal by a predetermined amount, and wherein the device is arranged in a manner such that, in use, the two rotated polarisation component signals are being combined by way of the birefringent material for providing the predetermined polarisation rotated optical signal.
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Specification