Optical EngineeringDepolarization bandwidth of fiber-optic passive depolarizers
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Several single-mode fiber optic applications benefit from the use of depolarized light. Examples are suppression of polarization hole burning (PHB) in erbium-doped fiber amplifiers (EDFA),1–3 reduction of polarization-dependent loss arising from fiber components (e.g., couplers and wave-division multiplexers),4 reduction of the signal fading in fiber optic sensors,5–7 and coherent detection systems.8,9 Depolarizers are also used for fiber optic component testing.