Passive Fiber Optic Components Made by the Fused Biconical Taper Process

The rapid development and deployment of optical fiber for a variety of applications has resulted in a similarly rapid development of a myriad of components to effectively utilize the fiber. Thus, for example, significant work has been done over the past several years in the development of sources and detectors, connectors, and splices. All of these components share the common trait that they are external to the fiber and hence are not part of the fiber per se. There is another class of components, however, made from the fiber itself. A number of components, such as polarizers, analyzers and mode or wavelength filters, require only a simple bending of the fiber in a specified manner. On the other hand, such techniques as polishing, etching and heating can also be used to alter the transmission properties of the fiber.

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