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Fiber optic feedthrough

Modern networks for telecommunication and internet use fiber optic cables for data transmission, which comprise bundles of individual optical fibers. Optical transmission techniques using optical fibers have rapidly been developed in that they can transmit a large quantity of data within a short period of time while involving a reduced transmission loss. Optoelectronic components are normally pigtailed assemblies that include a housing containing the active element for the component, e.g., a semiconductor laser diode in the case of a transmitter or a PIN photodetector in the case of a receiver; and a fiber feedthrough subassembly comprising a length of fiber optic cable having a lensed end thereon attached to and sealed within a supporting member. Optical fiber feedthroughs provide a transition from the environment external to the package to the internal operating environment of the package. It prevents loads placed on the portion of fiber external to the package from being transferred to the fiber within the package, where the delicate transitions from fiber to the optical device can be readily damaged.

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