US 2003/0117625 A1 · Polarization dependent loss measuring apparatus

Abstract

Wavelength dependent measurement is made by launching light into an object 8 to be measured and receiving transmitted light from the object 8 while continuously changing wavelengths of output light. Next, peak wavelength detection processing for detecting a wavelength at the time when loss or gain of the transmitted light from the object 8 becomes maximum based on a wavelength dependent measurement result is performed. Then, polarization dependent loss measurement processing for measuring polarization dependent loss of the object 8 is performed by measuring the transmitted light from the object 8 while launching light of a measurement wavelength detected into the object 8 and randomly changing a polarization state of the light. Further, a control circuit processes associating a wavelength dependent analysis result with a PDL measurement result, and displays its result on a display part 2.

Claims6

Dependent claims

A polarization dependent loss measuring apparatus comprising:

wavelength dependent measurement member for measuring transmitted light from a measured object while changing a wavelength of light incident on the measured object,
peak wavelength detection member for detecting a wavelength at the time when a level of loss or gain of the transmitted light becomes maximum based on a measurement result by said wavelength dependent measurement member,
polarization dependent loss measurement member for measuring polarization dependent loss of the measured object by measuring the transmitted light from the measured object while launching light of a wavelength detected by said peak wavelength detection member into the measured object and also randomly changing a polarization state of the light,
measurement result processing member for performing association processing of a measurement result by said polarization dependent loss measurement member with a detection result by said peak wavelength detection member, and
output member for outputting a processing result by said measurement result processing member.

2 more elements

A polarization dependent loss measuring apparatus comprising:

wavelength dependent measurement member for measuring transmitted light from a measured object while changing a wavelength of light incident on the measured object,
notch wavelength detection member for detecting a wavelength at the time when a level of loss or gain of the transmitted light becomes minimum based on a measurement result by said wavelength dependent measurement member,
polarization dependent loss measurement member for measuring polarization dependent loss of the measured object by measuring the transmitted light from the measured object while launching light of a wavelength detected by said notch wavelength detection member into the measured object and also randomly changing a polarization state of the light,
measurement result processing member for performing association processing of a measurement result by said polarization dependent loss measurement member with a detection result by the notch wavelength detection member, and
output member for outputting a processing result by said measurement result processing member.

2 more elements

Dependencies are inferred from the claim text.

Polarization dependent loss measuring apparatus

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Polarization dependent loss measuring apparatus

Life of this patent

Abstract

Claims6