Abstract: A device, for transmitting or receiving ultrasonic signals, includes a transducer and an acoustic horn. The transducer is configured to convert between electrical energy and the ultrasonic signals, and may be a micro electromechanical system (MEMS) transducer. The acoustic horn is coupled to the transducer, and includes multiple apertures through which the ultrasonic signals are transmitted or received in order to manipulate at least one of a radiation pattern, frequency response or magnitude of the ultrasonic signals. The multiple apertures have different sizes.

Abstract: An MID module with a plug-type connector for an optical fibre with an upper face, edge faces and a lower face, comprising an accommodating channel surrounded by walls for the accommodation of an optical fibre. Here the diameter of the accommodation channel essentially corresponds to that of the optical fibre. The MID module further comprises a semiconductor chip, which is arranged on a front face of the accommodating channel. The semiconductor chip comprises an optically active region, which is optically accessible from the accommodation channel. A slot is provided in the walls of the MID module for the accommodation of a locking element. A locking element, introducible into the slot, locks the fibre in the accommodating channel.

Abstract: The invention relates to an electromagnetic screening structure on or in a non-conductive carrier material in which non-conductive metal compounds are placed. The screening structure comprises a flat metal seed layer formed on or in the carrier material, which is formed through metal seeds that have been released through electromagnetic radiation, and a flat metal coating which is applied over the metal seed layer and which is in contact with said metal seed layer. The invention additionally relates to an electronic or optoelectronic used with the screening structure and a method for manufacturing the screening structure. In a further aspect of the invention, an electronic or optoelectronic assembly is provided with a carrier element, wherein at least one additional electrical or optoelectronic component is arranged on the surface of the carrier material and is in contact with conductor path structures formed on the carrier surface.

Abstract: The present invention provides an optical switch including a loss element having a signal loss, and a rare earth doped gain element optically connected in series with the loss element. The rare earth doped gain element is operable to produce a signal gain. The signal gain and the signal loss are about equal. The present invention also provides a method of optical switching including optically connecting a loss element in series with a rare earth doped gain element and passing an optical signal through the loss element and the gain element. The loss element attenuates the optical signal by a first amount. The method further includes selectively applying an optical pump to the gain element to perform the switching, the gain element amplifying the optical signal by the first amount in response to the optical pump.

Abstract: An integrated circuit cast on a single die having a plurality of receivers in a receiver region, a plurality of transmitters in a transmitter region, and a spatial separation region having a plurality of n-type and p-type subregions disposed on the single die to separate the transmitter region from the receiver region. The pn-junctions between the n-type and p-type subregions are reverse-biased thereby reducing or eliminating coupling of noise and crosstalk between the transmitter and receiver is reduced.

Abstract: In a method of fabricating a traveling wave optical modulator, an optical waveguide structure having an optical waveguide and a signal electrode path extending from a signal input to a termination output is formed. The signal electrode path is modified to include a customized signal electrode having a transmission line characteristic substantially matching a target transmission line parameter value. In another aspect, a traveling wave optical waveguide structure includes an optical waveguide and a signal electrode path. The signal electrode path extends from a signal input to a termination output and is defined by an electrode seed structure. The electrode seed structure is exposed for subsequent electrode formation and has a transmission line characteristic detrimental to proper propagation of an electrical modulation signal.

Abstract: An optical communication system including an integrated circuit chip, an electro-optical chip operatively integrated on the integrated circuit chip, an adjustable optical chip which includes at least one optical element disposed between the electro-optical chip and one of a source or recipient of at least one optical signal, at least one micromachine operatively coupled to the at least one optical element to selectively manipulate the at least one optical element; an optical signal sensor disposed relative to the at least one optical signal to sense an optical signal condition data, and to transmit said optical signal condition data to the integrated circuit chip, a feedback circuit between the integrated circuit chip and the at least one micromachine, the integrated circuit chip configured to receive the optical signal condition data, convert it to a corresponding feedback signal, and to transmit the feedback signal through the feedback circuit to the micromachine, thereby causing the micromachine to selecti

Abstract: A light-emitting diode with no fluctuations in optical properties and good sealing properties, and a simple production method for producing this light-emitting diode. The light-emitting diode has a base comprising a cup part on which the light-emitting diode is placed, a resin material introduced into cup part, and a lens member placed on top of a cup for focusing light emitted by a light-emitting diode chip. A layer of fluorescent material, which converts the wavelength of at least some of the light from the light-emitting diode chip, is applied to the inner convex face of the lens member. When the lens member is attached to the base, the inner convex face deforms the resin material and air and excess resin material can be pushed to the outside.

Abstract: An optical navigation sensor apparatus for an optical mouse includes an optical navigation sensor having an electronic chip, an aperture plate and an imaging lens integrated into a single package. The imaging lens includes a lens housing surrounding the aperture and providing a barrier to the entry of foreign matter into the aperture. In one form, the optical navigation sensor also includes a light emitting diode (LED) for illuminating a small area of a surface under the sensor and generating a reflected image that is detected by the electronic chip. In a sensor having an integral LED, an integral collimating lens is included for receiving light from the LED and focusing the light from the LED on the surface to be illuminated. The collimating lens is incorporated into a lens housing surrounding the LED and protecting the LED from exposure to foreign material.

Abstract: Speckle based optical navigation is improved by increasing the collection efficiency of the photodetector through the introduction of a lightpipe or reflector technology. For example, the use of elliptical sidewalls and diffraction gratings in conjunction with a lightpipe leads to improvements in collection efficiency.