System and process for side mode suppression by tunable filter train alignment in fiber optic system
AssigneeAxsun Technologies, Inc.
InventorsWalid A. Atia, Randal A. Murdza
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Abstract
A process for tunable filter train alignment comprises detecting a spectral response of the filter train and aligning an optical fiber that transmits an input optical signal to the filter train during operation. Further, the tunable filter is moved relative to the filter train in response to a spectral response of the filter train. As a result, the alignment and spectral response of the tunable filter train are optimized. In the preferred embodiment, the alignment and SMSR optimization occur simultaneously with respect to each other.
Claims32
A process for tunable filter train alignment, comprising:
- detecting a spectral response of the filter train;
- aligning an optical fiber that transmits an input optical signal to the filter train during operation of the filter train;
- and
- moving a Fabry-Perot tunable filter relative to the tunable filter in response to a spectral response of the filter train.
A calibration system for a filter train including a Fabry-Perot tunable filter, the calibration system comprising:
- a filter alignment system for positioning the tunable filter relative to the filter train;
- a signal generator for injecting a diagnostic signal into the filter train;
- a detection system that detects the diagnostic signal after interaction with the tunable filter and generates information concerning a spectral response;
- and
- a control system that controls the filter alignment system in response to the detected spectral response information.
A process for tunable filter train alignment, comprising:
- detecting a spectral response of the filter train by scanning a Fabry-Perot tunable filter of the filter train across an optical signal;
- aligning the filter train in response to the detected spectral response.
Dependencies are inferred from the claim text.