Agilent Technologies, Inc.

Avago Technologies General IP (singapore) Pte. Ltd.

Avago Technologies Fiber IP (singapore) Pte. Ltd

Avago Technologies Fiber IP Pte Ltd.

Lein Applied Diagnostics Limited

Occuity Limited

Simon Meadowcroft

Declan Reilly

Andrew Thomas Harker

Robin Taylor

Andrew Bothwell

Richard Holley

James Reynolds

Austen Hearn

Jerry Crouch

Christopher David Creasey

An optical measurement apparatus () containing a bidirectional optical transceiver component (), the bidirectonal optical transceiver component () comprising a source of optical electromagnetic radiation (), an optical detector (), a beamsplitter, and a combined input and output port (). The port () is arranged to permit, when in use, propagation of optical electromagnetic radiation therethrough. The beamsplitter is aligned within a housing () with respect to the optical source (), the optical detector () and the port () in order to direct optical electromagnetic radiation emitted by the optical source () to the port () and to direct optical electromagnetic radiation received from the port () to the optical detector ().

Optical measurement apparatus and method of manufacturing the same

An optical measurement apparatus comprises an optical system. The optical system comprises a source and an image capture device. The source is arranged to generate, when in use, a beam of electromagnetic radiation. Further, the optical system is arranged to direct the beam of electromagnetic radiation to a location to be measured. The optical measurement apparatus also comprises a feedback arrangement arranged to receive a reflected beam from the location to be measured and to provide feedback information in response to receipt of the reflected beam, the feedback information being indicative of degree of alignment of the location to be measured with the optical system.

Optical alignment apparatus and method therefor

An optical beam splitter arrangement comprising two beam splitter mounts one of which is turnable relative to the other by flexing a deformable connection. By controlling the turn angle of rotation it is possible to use the light reflected by one of the beam splitters to monitor the output power of a laser and to use the light reflected by the other beam splitter to monitor the wavelength transmitted by the laser.

Optical beam splitter apparatus

A multimode optical fibre communications system, and in particular to a system in which non-linearities in the propagation of the signal through a multimode optical communications channel degrade the signal presented to the receiver. The system includes an optical transmitter unit for connection to a multimode optical fibre transmission link. The transmitter unit has a data input for receiving an input data signal, a data signal processing circuit and a source of optical radiation. The data signal processing circuit is arranged to receive the input data signal from the data input and to provide a processed data signal to the source of optical radiation and the source of optical radiation is arranged to generate from this an optical signal for transmission by a multimode optical fibre. The data processing circuit is arranged to provide from the input data signal a non-inverted data signal and an inverted data signal, receive a control signal for controlling the generation of the processed data signal, apply a controllable delay in accordance with the control signal to at least one of the non-inverted and inverted data signals, and combine the non-inverted and inverted signals after the application of the controllable delay(s) and gain factor(s) to generate the processed data signal.

Multimode optical fibre communication system

A control loop detects the presence of cross-talk between first, second and third adjacent amplitude modulated wavelength division modulated channels of an optical communications system. A receiver including a demultiplexer, such as an Arrayed Waveguide Grating (AWG), receives portions of the energy in the channels to derive first, second and third electrical signals that are respectively replicas of the modulation of the first, second and third channels. Wavelength drift of the carried frequencies of the channels in detected by comparing the three signals in an electronic combinatorial logic unit.

Method of detecting the presence of cross-talk and apparatus therefor

An arrangement for optical fibre communications, for used, e.g., in millimetre (MM) fibre transmission systems includes:

Adaptive transmitter arrangement for optical fiber communications and related method

A laser located within a casing of an optoelectronic module is operated by heating the laser to an operating temperature at or above the maximum specified, operating temperature of the module casing using a heater device within the module, the laser having operating characteristics at its operating temperature that are sufficient for its required function. The heater device can be separated from the module casing by an insulating layer or by a thermal switch. The thermal switch can include a droplet of thermally conductive fluid displaceable between a first position where it provides a low thermal impedance path between the heater device and the module casing and a second position wherein a high thermal impedance path is provided between the heater device and the module casing.

Optoelectronic module and a thermal switch therefor

An optical assembly for use in an optical telecommunications system and method for aligning the optical assembly. The assembly uses a pair of ball bearings to support an optical fibre on a baseplate. The optical fibre is aligned with respect to an optical device and then the first ball bearing is inserted and welded in place. The fibre alignment is then fine tuned and the second ball bearing is inserted and welded in place, thereby providing a simpler and more accurate method of aligning an optical fibre to an optical device.

Optical assembly and method for alignment thereof

An apparatus for determining the wavelength of light emitted by, for example, a laser, includes three photodiodes. One photodiode receives a proportion of the light redirected from the main optical path by a beam splitter. A second photodiode receives a proportion of the light redirected from the main optical path by the beam splitter and passing through a broadband filter. A third photodiode receives light that has been caused to interfere by an interferometric device. The ratio of the light intensities at the first and second photodiodes provide a coarse determination of wavelength, when compared to a lookup table, and the ratio of the light intensities at the first and third photodiodes provide a more exact determination of the wavelength.

Wavelength determining apparatus and method

An optoelectronic device, for example a laser diode transmitter or receiver module is disclosed having thermoelectric control of the operating temperature of the device.

Optoelectronic component with thermoelectric temperature control

An optical component in the form of a right angled triangular prism having a first side, a second side orthogonal to the first side, and a third side generally inclined to the first and second sides to reflect optical radiation incoming from the first side towards the second side. The first and second sides have semi-reflecting surfaces acting as etalon surfaces providing an interferometric pattern. The optical transmittance between the first and the second sides is wavelength dependent and the radiation exiting the second side of the component is rotated 90 degrees to the radiation entering the first side.

Optical component and compact wavelength locking arrangement including such a component

A method for aligning optical components in an optical assembly. The method comprises the steps of pre-aligning the optical fiber to the optical device, measuring a coupling efficiency of the optical fiber to the optical device, applying energy to a support means, the energy being sufficient to enable the support means to become ductile, and applying a force to the support means in a direction which increases the coupling efficiency.

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Stowmarket, United Kingdom

Simon Meadowcroft