Title:
半導体レーザの波長選択、位相及び利得領域における波長制御
Document Type and Number:
Japanese Patent JP5070291
Kind Code:
B2
Abstract:
Particular embodiments of the present invention relate generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser is configured for optical emission of encoded data. At least one parameter of the optical emission is a function of a drive current IGAIN injected into the gain section of the semiconductor laser and one or more additional drive currents I/VPHASE, I/VDBR. Mode selection in the semiconductor laser is altered by perturbing at least one of the additional drive currents I/VPHASE, I/VDBR with a perturbation signal I/VPTRB to alter mode selection in the semiconductor laser such that a plurality of different emission modes are selected in the semiconductor laser over a target emission period. In this manner, patterned variations in the wavelength or intensity profile of the laser can be disrupted to disguise patterned flaws that would otherwise be readily noticeable in the output of the laser.
Inventors:
Batia, Vikram
Gorlier, Jack
Fu Martin H
Loeever, David A
Rickets, Daniel Haut
Gorlier, Jack
Fu Martin H
Loeever, David A
Rickets, Daniel Haut
Application Number:
JP2009533316A
Publication Date:
November 07, 2012
Filing Date:
October 11, 2007
Export Citation:
Assignee:
CORNING INCORPORATED
International Classes:
H01S5/0687; H01S5/125
Domestic Patent References:
| JP61133685A | ||||
| JP62246737A | ||||
| JP5167169A | ||||
| JP62118590A | ||||
| JP61260691A | ||||
| JP58012385A | ||||
| JP2005276902A |
Foreign References:
| WO2005083854A1 | ||||
| WO2006060656A1 |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma