公开(公告)号：EP1149443A4

公开(公告)日：2006-03-22

申请号：EP99948194

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 ,  H01S5/0687 ,  H01S3/105 ,  H01S3/1055 ,  H01S3/13 ,  H01S3/139 ,  H01S5/022 ,  H01S5/042 ,  H01S5/06 ,  H01S5/062 ,  H01S5/068 ,  H01S5/0683 ,  H01S5/14

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.

摘要翻译： 本发明提供了用于校准和测试光学部件的光学万用表（100）。 光学万用表（100）包括用于在宽范围的频率，占空比和幅度上传送输出光束（260）的模拟/数字信号发生器（250）。 电路还被提供用于将模拟信号调制（222）到输出端上。 信号发生器（250）包括可调谐激光器，该可调谐激光器关于光路长度以及调谐元件的调谐角度被热稳定。 可调谐激光器呈现小型化因素，部分原因在于新颖的波长控制过程，其利用开环系统来保持精确的输出波长（260）控制而不需要波长或位置反馈设备。 另外，可调谐激光器结合了低成本的调制器电路（222），其将低频闭环功率控制与单独的数字调制器组合。