Oclaro Technology Limited

Bookham Technology Limited

Oclaro Technology Limted

Lloyd Nicholas Langley

Andrew Cannon Carter

Neil David Whitbread

Andrew John Ward

Robert Anthony Griffin

Ian B Betty

Giacinto Busico

David Williamson

Ian Brian Betty

Sacrificial optical test structures are constructed upon a wafer of pre-cleaved optical chips for testing the optical functions of the pre-cleaved optical chips. The sacrificial optical structures are disabled upon the cleaving the optical chips from the wafer and the cleaved optical chips can be used for their desired end functions. The test structures may remain on the cleaved optical chips or they may be discarded.

Sacrificial waveguide test structures

An adjustable array includes a plurality of optical devices. Each adjustable array device has an optical light output therefrom and is configured whereby the corresponding optical lights of the plurality of optical devices have a predefined nonequivalent relationship relative to one another with respect to an output parameter. In response to a drive signal, the plurality of optical devices are further configured to adjust the corresponding optical lights with respect to the output parameter while substantially maintaining the predefined nonequivalent relationship.

Array comprising a plurality of adjustable optical devices

A Mach-Zehnder interferometer (MZI) incorporates a tunable multimode interference (MMI) coupler comprising a tunable MMI coupler with a tuning electrode on a surface of a tunable MMI region and an electrically insulating region provided within the tunable MMI region. The MMI region is tunable in response to detection of a photocurrent by a photodetector section. Such a tunable MZI is particularly advantageous in enabling a split ratio of an optical splitter, the split ratio and the splitter to be controlled in a particularly efficient manner.

Optical waveguide splitters

An optical interface arrangement includes a tile carrying an optical component which is mounted substantially at right angles to a closely adjacent circuit board which carries an electrical circuit. The circuit board has an electrically conductive track extending to an edge of the board adjacent to an edge of the tile. The edge surface of the tile has a localized recess carrying an electrically conductive material which extends across the thickness of the tile and along a major surface of the tile to connect with the optical component. A short bondwire is provided which links the electrically conductive material in the recess to the adjacent electrically conductive track on the circuit board.

Optical interface arrangement

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Northampton, United Kingdom

Lloyd Nicholas Langley