OPTICAL PROCESSING
First Claim
Patent Images
1. An optical processor having a reflective SLM, a dispersion device and a focussing device, wherein the SLM has an array of controllable elements;
- wherein the processor is configured such that light from a common point on the dispersion device is spatially distributed over at least part of the SLM, and wherein the processor is configured such that the controllable elements display different holograms at chosen locations of the SLM where said light is incident, for controlling directions at which light from respective said locations emerges.
1 Assignment
0 Petitions
Accused Products
Abstract
A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively.
-
Citations
30 Claims
-
1. An optical processor having a reflective SLM, a dispersion device and a focussing device, wherein the SLM has an array of controllable elements;
- wherein the processor is configured such that light from a common point on the dispersion device is spatially distributed over at least part of the SLM, and wherein the processor is configured such that the controllable elements display different holograms at chosen locations of the SLM where said light is incident, for controlling directions at which light from respective said locations emerges.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
14. An optical processor having at least one input and at least two outputs and operable to select between the outputs, the module comprising an SLM having an array of pixels, with circuitry constructed and arranged to display holograms on the pixels to route light of different frequencies to respective outputs.
-
15. A method of controlling light comprising
applying an input light beam having plural wavelengths to a controllable optical device; -
controlling the controllable optical device thereby to select desired wavelengths from the input light beam; and directing the desired wavelengths to respective output directions. - View Dependent Claims (16, 17, 18)
-
- 19. An optical processor having plural inputs and an output, comprising a controllable device for combining wavelengths from the inputs to appear at the output, wherein each input signal may contain any desired set of the plural wavelengths of the output.
-
23. A method of operating an optical processor having a reflective SLM having an array of controllable elements, a dispersion device and a focussing device wherein light beams from a common point on the dispersion device are spatially separate when incident upon the SLM, and wherein the SLM is configured to display holograms at respective locations of incidence of light to provide emergent beams having controllable directions, the method comprising delineating groups of individual controllable elements;
- selecting, from stored control data, control data for each group of controllable elements of the SLM;
generating from the respective selected control data a respective hologram at each group of controllable elements; and
varying the delineation of the groups and/or the selection of control data whereby upon illumination of said groups by respective light beams, respective emergent light beams from the groups are controllable independently of each other. - View Dependent Claims (24, 25)
- selecting, from stored control data, control data for each group of controllable elements of the SLM;
-
26. A method of controlling light comprising:
- —
causing said light to become angularly dispersed by a dispersion device;
focussing, by a focussing device, angularly dispersed light from the dispersion device to provide focussed light;making said focussed light incident upon a reflective SLM, whereby the light is spatially distributed across at least a part of the SLM, wherein the SLM has an array of controllable elements; and displaying respective holograms at respective locations of incidence of light to provide emergent light whose direction is controlled by respective holograms. - View Dependent Claims (29)
- —
-
27. A method of directing light using a reflective SLM, a dispersion device and a focussing device, wherein the reflective SLM has an array of controllable elements and wherein the arrangement is such that light from a common point on the dispersion device is spatially distributed over the reflective SLM, the method comprising:
causing the controllable elements to display different holograms at chosen locations whereon light is incident, whereby light from said locations emerges in controllable directions. - View Dependent Claims (28)
-
30. An optical processor arranged to function as at least one of the following:
- an optical add/drop multiplexer, an optical monitoring device, a channel equaliser, a channel controller, a programmable optical source, a programmable optical filter, an optical spectrum analyser, an evaluation device, a reconfigurable wavelength demultiplexer, and a reconfigurable wavelength multiplexer, the processor having a reflective SLM, a dispersion device and a focussing device, wherein the SLM has an array of controllable elements;
wherein the processor is configured such that light from a common point on the dispersion device is spatially distributed over the SLM, and wherein the processor is configured such that the controllable elements display different holograms at chosen locations, whereby light from said locations emerges in respective directions, the directions deviating from a direction of specular reflection.
- an optical add/drop multiplexer, an optical monitoring device, a channel equaliser, a channel controller, a programmable optical source, a programmable optical filter, an optical spectrum analyser, an evaluation device, a reconfigurable wavelength demultiplexer, and a reconfigurable wavelength multiplexer, the processor having a reflective SLM, a dispersion device and a focussing device, wherein the SLM has an array of controllable elements;
Specification