Patent ID: 9429467
Filing Date: 2016-08-30
CPC Classification: G01J,G01M,G02B

Claim Text:
1. An apparatus for measuring optical power comprising: an optical fiber configured to propagate an optical signal, wherein the optical fiber includes a core and at least a first cladding layer, wherein a portion of the optical signal scatters out of the optical fiber along a length of the optical fiber to form scattered fiber light; a detector system configured to receive the scattered fiber light along the length of the optical fiber and to output a detection signal based on the received scattered fiber light; a processor configured to receive the detection signal and to determine a power value of the optical signal based on the received detection signal; and a polarization modulator unit located between the optical fiber and the detector system and operatively coupled to the processor, wherein the polarization modulator unit is configured to modify an intensity of the scattered fiber light after the scattered fiber light has exited the optical fiber and before the scattered fiber light reaches the detector system.