公开(公告)号：EP1149443A1

公开(公告)日：2001-10-31

申请号：EP99948194.8

申请日：1999-09-09

申请人： New Focus, Inc.

发明人： DAY, Timothy ,  TUGANOV, Alexander, V. ,  WU, I-Fan ,  PEASE, John ,  FARINAS, Alejandro, D. ,  ARNONE, David, F. ,  REITER, Kenneth, C. ,  BROWNELL, Michael ,  CARNEY, Robert, A. ,  MOORE, Bruce, A.

IPC分类号： H01S3/10

CPC分类号： H01S5/02248 ,  H01S3/105 ,  H01S3/1055 ,  H01S5/0427 ,  H01S5/0617 ,  H01S5/06213 ,  H01S5/06804 ,  H01S5/06832 ,  H01S5/0687 ,  H01S5/1039 ,  H01S5/141 ,  H01S5/143

摘要： The present invention provides an optical multimeter (100) for use in calibrating and testing optical components. The optical multimeter (100) includes an analog/digital signal generator (250) for delivering an output beam (260) over a wide range of frequencies, duty cycles and amplitudes. Circuitry is also provided for modulation (222) of an analog signal onto the output. The signal generator (250) includes a tunable laser that is thermally stabilized as to optical path length, as well as tuning angle of the tuning element. The tunable laser exhibits a small form factor due in part to a novel wavelength control process which utilizes an open loop system to maintain precise output wavelength (260) control without the requirement of either a wavelength or position feedback device. Additionally, the tunable laser incorporates an inexpensive modulator circuit (222) which combines a low frequency closed loop power control with a separate digital modulator.