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A PM fiber is a highly birefringent fiber, which maintains the polarization state of light as the large difference in refractive index between axes act to substantially reduce the probability of cross coupling.

For more information, please visit our 'Polarisation Mode Dispersion (PMD)' entry. Additionally, please request our technical note 'Highly Birefringent Polarising Maintaining Fiber for Fiber Optical Gyroscopes (FOGs)'.

Related Products: PM Coupler Fiber, PM Erbium Doped Fiber, PM Gyro Fiber, Polyimide Coated PM Fiber, Spun HiBi Fiber, Standard PM Fiber, Telecoms PM Fiber, Zing™ Polarizing Fiber

Related Terms: Beat Length, Birefringence, Birefringent Fiber, Bow-Tie Fiber, H-Parameter, 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