公开(公告)号：WO2004062052A3

公开(公告)日：2004-11-25

申请号：PCT/US0339827

申请日：2003-12-12

Applicant: INTEL CORP

Inventor： SPROCK DOUGLAS ,  CARNEY ROBERT ,  ROBERTSON TIMOTHY

IPC: G01K7/00 ,  G01K7/20 ,  H01S3/04 ,  H01S5/06 ,  H01S5/068 ,  H01S5/14

CPC classification number: G01K7/206 ,  G01K7/20

Abstract: A tunable optical unit includes a resistive temperature device (RTD), a thermal tuning device and a measurement circuit. The RTD has a resistance dependent on a temperature of the thermal tuning device. The measurement circuit outputs a signal that is dependent on the resistance of the RTD. The signal is used to control the temperature of the thermal tuning device in tuning the tunable optical unit. A reference resistance can be connected in series with the RTD to make ratio-metric measurements to determine the RTD's resistance (and hence the temperature of the tuning elements) without having to know the value of the current conducted through the RTD and to reduce sensitivity to fluctuations in the excitation signal.

Abstract translation: 可调谐光学单元包括电阻温度装置（RTD），热调谐装置和测量电路。 RTD具有取决于热调节装置的温度的电阻。 测量电路输出取决于RTD电阻的信号。 该信号用于在调谐可调谐光学单元时控制热调谐装置的温度。 参考电阻可以与RTD串联连接以进行比率度量测量，以确定RTD的电阻（因此调谐元件的温度），而不必知道通过RTD传导的电流的值，并降低对RTD的敏感性 激发信号波动。