Patent ID: 8457165
Filing Date: 2013-06-04
Classification: H01S,H04B

Abstract:
1. A device for producing laser light at different optical wavelengths, comprising: an array of tunable lasers to produce laser light at different optical wavelengths, respectively, each tunable laser including: a laser control unit electrically coupled to the tunable lasers to apply the electrical control signal as a common control signal to the tunable sampled Bragg grating reflector in each of the tunable lasers to synchronously tune the tunable lasers that operate at the different optical wavelengths, respectively, wherein a sampling period length of the tunable sampled Bragg grating reflector creates a coarse tuning step approximately equal to a number of the tunable lasers in the array of tunable lasers, multiplied by, a channel spacing between the different optical wavelengths of the tunable lasers in the array, the sampling period length configured to reduce optical loss in the tunable lasers.