| Abstract |
Polarization Scramblers perform polarization scrambling at high speed and make Degree Of Polarization (DOP) zero on time average. It is based on all fiber technology that has enabled us to build practically zero insertion loss, back reflection free and a compact polarization scrambler.
Polarization dependence is one of the biggest issues in fiber-optic measurement, communications and sensors. PDL in components and equipments, Polarization Dependent Gain (PDG) in EDFA are typical examples. Depolarizing is one of the solutions for the polarizing problems. Polarization Scrambler provides the best solution for most situations in which the depolarization is needed.
For depolarizing we use cylindrical PZT which made of piezoelectronic material that stress the fiber using DC current. Combining with single mode fiber ,we made cylindrical PZT modulator. And finally we find out solution that minimize the polarization dependance putting in the half wave plate between single mode fiber and modulator.
This equipment provides many people with an excellent way to characterize / qualify optical property of optical devices. Furthermore, Polarization Scramblers can solve the problems associated with PDG of EDFAs by scrambling polarization of the optical signal.
|
