Patent ID: 7236709
Filing Date: 2007-06-26
Classification: G02B,H01S

Abstract:
1. A device, comprising: a plurality of tunable lasers operable to produce laser beams at different wavelengths; a plurality of fibers having input terminals to respectively coupled to said tunable lasers to receive said laser beams and output terminals to output said laser beams, wherein said output terminals are coupled together to form a fiber bundle; a collimating lens positioned to receive said laser beams from said fiber bundle and to direct said laser beams to pass through or near a common location in different directions with respect to one another; a steering mirror having a front surface positioned in optical paths of said laser beams from said collimating lens and a back reflective surface; a mirror control module coupled to said steering mirror and operable to adjust said steering mirror at a plurality of selected steering angles to respectively direct said laser beams from said different directions to, one at a time, along a common direction; a laser control mechanism operable to detect a frequency error in a laser beam when selected to be directed along said common direction, said laser control mechanism operable to control a respective tunable laser that produces said laser beam to reduce said frequency error; and an active control mechanism having a laser operable to produce an optical monitor beam to said back reflective surface and an optical detector positioned to receive said optical monitor beam reflected from said back reflective surface and operable to determine said angular error according to a position of said optical monitor beam on said optical detector.