Apparatus, method, and computer program product for controlling an interferromic phased array
US6233085A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Oct 19, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides several apparatus, methods, and computer program products for phase shifts in an optical signal generated by an optical device. The present invention includes a optical phase modulator for altering the phase of the optical signals output by an optical device. The present invention also includes a detector assembly that receives an interference signal generated by an optical interference of a power signal and a reference signal. The detector assembly generates a lockin signal representing the optical phase difference between the power signal and the reference signal. Connected to both the detector assembly and the optical phase detector is a processor. The processor receives the lockin signal from the detector assembly and compares the lockin signal to at least one predetermined set point value. The predetermined set point value represents either a desired maximum lockin signal value or a range of acceptable lockin values. If the lockin signal either exceeds the set point value or is not within a range of lockin signal values defined by the predetermined set point value, the processor combines the lockin signal with a step waveform and generates a comb…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.