Optical fiber with an integral lens at its end portion

Details Optical fiber with an integral lens at its end portion Optical fiber with an integral lens at its end portion

1990-02-28

1992-03-31

Gonzalez, Frank

Optical waveguides

With optical coupler

Input/output coupler

385 93, G02B 632

Patent

active

051014572

ABSTRACT:
An optoelectronic assembly is described which comprises an optoelectronic device (e.g. laser, photodiode or another fiber), an end portion of an optical fiber coupled to the device, and an integral lens formed on the end portion. The lens comprises a frustum of a first cone having a cone angle .theta..sub.1, and, on top of the frustum, a second cone having a cone angle .theta..sub.2 <.theta..sub.1, thus forming a double conical lens which requires no further operations (such as fire polishing) to provide coupling efficiencies of about 80% with a standard deviation of less than .+-.2%.

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