H - Electricity – 01 – S
Patent
H - Electricity
01
S
H01S 3/13 (2006.01) H01S 5/0687 (2006.01) H01S 5/0683 (2006.01)
Patent
CA 2254305
An apparatus for simultaneously stabilising the output power and wavelength of a semiconductor laser is disclosed. A wavelength discriminating scheme is used to provide a wavelength error signal and an output power detection scheme is used to provide an output power level signal. The wavelength error signal is used to adjust the behaviour of a temperature sensor such that an automatic temperature control (ATC) module configured to maintain a pre-determined output from the temperature sensor, adjusts the actual laser temperature to minimise said signal. The output power level signal is directly delivered to an automatic power control (APC) module, which adjusts the drive current fed into the laser to minimise said signal using known control circuitry means. Adjusting the properties of the temperature sensor makes it possible for the apparatus to manipulate laser temperature and current to achieve simultaneous power, wavelength and temperature control, using the constant-temperature and constant-power external control modules used by semiconductor lasers that do not stabilise wavelength.
Burbidge Douglas S.
Gariepy Daniel
Nortel Networks Limited
Northern Telecom Limited
Smart & Biggar
LandOfFree
A laser module allowing simultaneous wavelength and power... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with A laser module allowing simultaneous wavelength and power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A laser module allowing simultaneous wavelength and power... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1385750