Bookham Technology Limited

Andrew Paul Cornish

Jonathan Charles Yeandle

James Stuart McKenzie

Darren Lee Martin

A method of making an optics package is described in which an exposed length of optical fiber is deliberately subject to a predetermined bend. The relationship between the exposed length of the optical fiber and a distance between a location at which it is supported and a fixing point on an optical device is determined taking into account the induced strain in the optical fiber. An optics package designed according to the method is also set forward.

Manufacture of an optics package

A hermetically sealed structure, particularly for use in an optoelectronic device is described. The structure comprises an outer sleeve of a material resistant to moisture ingress with an insert located in the sleeve at one end portion thereof and having a bore therethrough. An optical fibre extends through the bore and beyond the end portion of the sleeve with adhesive films respectively securing the insert to the sleeve and the optical fibre to the insert. A method of assembly for such a package is also described.

Hermetically sealed package and method of assembly

Attachment of an optical fibre (22) to a planar substrate (17) having a major face and an edge surface (14) perpendicular to the major face, the optical fibre (22) being positioned in a groove (18) provided in the major face of the substrate (17) and extending over the edge of the substrate, a mechanical restraint (24) such as a transparent apertured disc being affixed to the edge surface (19) of the substrate, e.g. by a light-cured adhesive (17) to resist movement of the optical fibre (22) in a direction substantially perpendicular to the major face.

Attachment of an optical fibre

A turntable optical transmission circuit has a light source forming an input to a waveguide, a detector detecting light output from the waveguide, a comparator for comparing the output with a predetermined value to generate a difference signal and a waveguide trimmer for changing the waveguide transmission in dependence on the difference signal until the output matches the predetermined value.

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Swindon, United Kingdom

Andrew Paul Cornish