초록 ▼

A method and apparatus is disclosed for optic signal power control to maintain a desired or optimum optic signal power level. During start-up, a default or target value from memory may be utilized to bias or otherwise control operation of an optic signal generator or driver. During operation, pre-st

A method and apparatus is disclosed for optic signal power control to maintain a desired or optimum optic signal power level. During start-up, a default or target value from memory may be utilized to bias or otherwise control operation of an optic signal generator or driver. During operation, pre-stored values may continue to be utilized or an open loop or closed loop control system may be utilized. An open loop control system may incorporate a temperature module or a timer module to account for changes in environment or changes due to aging that may undesirably affect system operation. A closed loop control system may incorporate one or more feedback loops that generate a compensation value to account for detected changes. In one configuration one or more peak values of the actual optic signal, or a portion thereof, are detected and processed to generate the compensation signal.

대표청구항 ▼

What is claimed is: 1. A closed loop optic signal control system comprising: a memory configured to store one or more target values; a driver configured to process an outgoing signal based on the one or more target values and one or more feedback values, wherein the target values represent driver c

What is claimed is: 1. A closed loop optic signal control system comprising: a memory configured to store one or more target values; a driver configured to process an outgoing signal based on the one or more target values and one or more feedback values, wherein the target values represent driver control values; an optic signal generator configured to generate an optic signal representative of the outgoing signal based on the one or more target values, the one or more feedback values, or both; and a detector configured to monitor one or more aspects of the optic signal and generate one or more feedback signals, wherein the one or more feedback signals are configured to supplement or replace the one or more target values to thereby maintain the one or more aspects of the optic signal at a specified level. 2. The system of claim 1, further comprising one or more junctions configured to combine the one or more feedback signals with the one or more target values to create one or more driver control values to control the driver. 3. The system of claim 1, further comprising one or more analog to digital converters and one or more digital to analog converters configured to process one or more of the one or more target signals and one or more feedback signals. 4. The system of claim 1, further comprising one or more integrators configured to provide second order control, wherein one or more target values and one or more feedback signals are combined as inputs to the one or more integrators, and where the one or more integrator outputs provide one or more driver control values. 5. The system of claim 1, wherein the one or more target values, the one or more feedback signals, or both are configured to control one or more of the following parameters: driver bias current, driver modulation current, and/or directly and/or indirectly optic signal extinction ratio, and optic signal power. 6. An open loop optic signal control system comprising: a memory configured to store one or more target values in a digital format, wherein the target values control the extinction ratio of the optic signal and/or the power of the optic signal; a digital to analog converter configured to convert the one or more target values to an analog format; a driver configured to process an outgoing signal based on the one or more target values, wherein the target values represent driver control values that control the extinction ratio of the optic signal and/or the optical output power; and an optical signal generator configured to generate an optic signal representative of the outgoing signal based on the one or more target values. 7. The system of claim 6, wherein the one or more target values are generated during a calibration process. 8. The system of claim 6, wherein the memory is accessible to thereby allow for changes to the one or more target values. 9. The system of claim 6, further comprising a HW/SW control module configured to select from two or more target values to utilize as the target value that controls the extinction ratio and/or optical output power. 10. The system of claim 6, wherein the one or more target values are configured to control one or more of the following parameters: driver bias current, and driver modulation current, and/or directly and/or indirectly optic signal extinction ratio, and optic signal power. 11. The system of claim 6, wherein the optical signal generator comprises a laser. 12. A transceiver configured to control and maintain one or more aspects of a transmitted optic signal comprising: an optical receiver comprising an optical detector and one or more amplifiers configured to convert an optical signal into an amplified electrical received signal; an optic transmitter comprising: an optic signal generator configured to convert an electrical signal to an optical signal, wherein one or more parameters of the optical signal are determined by one or more control values; a driver configured to provide one or more drive signals to the optic signal generator, the one or more drive signals based on one or more control values; a memory configured to store one or more control values, wherein the control values are selected to control the power level of the optic singal; and a closed loop feedback system configured to monitor one or more aspects of the optic signal and generate one or more feedback signals that may modify the one or more control values or one or more drive signals. 13. The system of claim 12, wherein the one or more parameters of the optical signal comprise at least power level and optic signal extinction ratio. 14. The system of claim 12, wherein the optical signal generator is a generator selected from the group of generators consisting of a laser, photodiode, and electronic light emitting device. 15. The system of claim 12, further comprising a closed loop feedback system configured to monitor one or more aspects of the optic signal and generate one or more feedback signals that may modify the one or more control values. 16. The system of claim 12, further comprising a switch configured to selectively output for use the one or more control values stored in memory or the one or more control values stored in memory modified by the one or more feedback signals. 17. The system of claim 12, further comprising a memory interface configured to write one or more different control values to the memory. 18. A method for controlling one or more aspects of an optic signal comprising: monitoring the optic signal; detecting one or more aspects of the optic signal; generating one or more feedback signals comprising an electrical signal representing the one or more aspects of the optic signal; comparing the one or more feedback signals to one or more target values to generate one or more error signals; generating one or more control signals based on the one or more error signals; providing the one or more control signals to an optic signal driver to control the one or more aspects of the optic signal. 19. The method of claim 18, wherein generating one or more control signals comprises increasing or decreasing at least one of the target values. 20. The method of claim 18, wherein the one or more aspects of the optical signal comprise at least an optic signal extinction ratio. 21. The method of claim 18, wherein the detecting is performed by an optical detector. 22. The method of claim 18, wherein the one or more target values are in a digital format and the one or more control values are in an analog format and the method further comprises converting the one or more feedback signals to a digital format and converting the one or more control signals from a digital format to an analog format.