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Any asymmetry in the fiber waveguide will tend to encourage slightly more loss to one polarization mode than the other, and this is of course a polarization dependent loss.

Related Products: PM Coupler Fiber, PM Erbium Doped Fiber, PM Gyro Fiber, Standard PM Fiber, Telecoms PM Fiber, Zing™ Polarizing Fiber

Related Terms: Attenuation , Bend Induced Loss, Birefringence, Birefringent Fiber, Highly Birefringent (HiBi), Polarization Dependent Loss (PDL), Polarization Extinction Ratio (PER), Polarization Maintaining (PM) Fiber, Polarization Mode, Polarization Mode Dispersion (PMD), Polarizing Fiber, Zing Fiber