Diamanti Eleni, Langrock Carsten, Fejer M M, Yamamoto Yoshihisa, Takesue Hiroki
Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4088, USA.
Opt Lett. 2006 Mar 15;31(6):727-9. doi: 10.1364/ol.31.000727.
Optical time-domain reflectometry (OTDR) is one of the most powerful tools in the characterization of optical fiber links. We demonstrate a photon-counting OTDR system at 1.5 microm with a single-photon detector, which combines frequency upconversion in a periodically poled lithium niobate waveguide and a silicon avalanche photodiode. The system exhibits high sensitivity, good spatial resolution, and short measurement time.
光时域反射仪（OTDR）是表征光纤链路最强大的工具之一。我们展示了一种采用单光子探测器的1.5微米光子计数OTDR系统，该系统将周期性极化铌酸锂波导中的频率上转换与硅雪崩光电二极管相结合。该系统具有高灵敏度、良好的空间分辨率和较短的测量时间。
