Calibration System for a Wavelength Selective Switch
AssigneeII-Vi Delaware, Inc.
InventorSteven James Frisken
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Abstract
Described herein is a calibration system (25) for a wavelength selective switch (1). The switch (1) is adapted for dynamically switching optical beams (5, 7) along respective trajectories between input and output ports disposed in an array (3) using a reconfigurable Liquid crystal on silicon (LCOS) spatial light modulator device (17). The calibration system (25) includes a monitor (27) for projecting an optical monitor beam (29) through at least a portion of the switch (1) onto the LCOS (17) and detecting the monitor beam (29) reflected from the LCOS (17). In response, system (25) provides a calibration signal (33) to an active correction unit (35) for applying a correction to one or more of the trajectories while maintaining a constant switching state in the LCOS (17).
Claims11
1-37. (canceled)
An optical fiber mount including:
- a base having a two dimensional upper surface;
- and
- a plurality of v-shaped grooves disposed in the upper surface of the base, each adapted for receiving an optical fiber, the grooves being spaced apart in a first dimension and extending parallel to each other in a second dimension perpendicular to the first dimension;
- wherein the grooves are symmetrically disposed about a central axis in the first dimension and the spacing between predetermined fiber pairs in the first dimension is different.
A monitoring method for a wavelength selective switch, the switch being adapted for dynamically switching optical beams along respective trajectories between input and output ports disposed in an array using a reconfigurable liquid crystal spatial light modulator device, the method including:
- monitoring predetermined characteristics of one or more of the optical beams;
- and
- in response to the monitoring, simultaneously correcting for more than one of the beam alignment, wavelength position and liquid crystal optical flicker.
An optical system including:
- one or more input ports for projecting input optical beams into the system;
- a spatial light modulator including a plurality of cells, each cell being independently electrically drivable at one of a number of predefined states for, in conjunction with other cells, diffracting the optical beams into at least a zero diffraction order and a higher diffraction order and selectively steering the diffraction orders along predetermined trajectories;
- a monitor for detecting the trajectory of one or more diffraction orders;
- and
- one or more output ports for receiving predetermined diffraction orders.
Dependencies are inferred from the claim text.