Request InfoAlliance Fiber Optic Products Inc.Alliance Fiber Optic Products Inc. has released a line of MPO (multifiber push-on) fiber optic loopback assemblies for burn-in and testing of MPO network components and systems. They are used to test transmitter capability and receiver sensitivity of network equipment, particularly for telecom and datacom requirements. They are available in a compact housing for high-density use, with or without attenuation. Standard products include a female MPO interface with eight-fiber quad small-form-factor pluggable, 12- or 24-fiber single-mode or multimode ferrules. 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