Francois Quentel

Bio: Francois Quentel is an academic researcher from Radiall (France). The author has contributed to research in topics: Signal & Electronic circuit. The author has an hindex of 3, co-authored 8 publications receiving 28 citations.

Single-channel communication device for optical fibre

Abstract: The field of the invention is that of fiber-optic communication devices known as transceivers, used in the aeronautical field for ensuring that on-board electronic computers can converse with one another, or in civil telecommunication. The subject of the invention is a single-channel transceiver comprising essentially a transmitting optoelectronic part, a receiving optoelectronic part, and a specific optical configuration for transmitting and receiving optical signals on a single optical port in real time and using the same wavelength. The optical architectures according to the invention include no semireflecting components, thus making it possible to reduce light energy losses at transmission and reception of the optical signals. These transceivers are particularly well suited for the construction of single-fiber full-duplex optical communication networks allowing simultaneous transmission and reception of signals.

Optoelectronic module for contactless optical link, related multi-channel modules, interconnection system, and associated method for manufacturing and connecting to a card

Abstract: Module optoelectronique (M), destine a assurer une conversion d'un signal electrique depuis une carte electronique en un signal optique propage en espace libre ou vice-versa, comprenant l'empilement suivant: Optoelectronic module (M), for providing a conversion from an electrical signal from an electronic card to an optical signal propagated in free space or vice versa, comprising the following stack: - une carte electronique (1) destinee a servir d'interface avec une carte electronique d'application; - An electronic card (1) for interfacing with an application circuit board; - un composant electronique de commande (2) adapte pour realiser la commande d'un composant optoelectronique, le composant electronique etant fixe directement sur la carte electronique et relie electriquement au circuit electronique; - An electronic component controller (2) adapted for performing control of an optoelectronic component, the electronic component being fixed directly on the circuit board and electrically connected to the electronic circuit; - un composant optoelectronique (3) adapte pour emettre ou recevoir un signal lumineux par sa surface superieure, le composant optoelectronique etant fixe directement sur le dessus du composant electronique de commande et relie electriquement au composant electronique; - An optoelectronic component (3) adapted to emit or receive a light signal through its upper surface, the optoelectronic component being attached directly on top of the electronic component of order and electrically connected to the electronic component; - un dispositif optique (9) adapte pour transmettre un signal optique ; - An optical device (9) adapted to transmit an optical signal; - un support (10) de dispositif optique, le support etant fixe, de preference par collage ou brasage, directement sur la carte electronique de sorte a assurer l'alignement mecanique entre le dispositif optique et le composant optoelectronique. - A support (10) of the optical device, the support being fixed, preferably by gluing or soldering, directly on the electronic card so as to ensure the mechanical alignment between the optical device and the optoelectronic component.

Free Space Optical Interconnect (FSOI) modules for short range data transfer applied to board to board high rate communication

Abstract: To provide more flexibility in inter-board communication in blade chassis, we developed a Free Space Optical Interconnect (FSOI) system for short range high speed data transfer. We designed robust and low footprint components compliant with both a use in milaero environment and an operation up to 5 and 10 Gbps. The 5Gpbs configuration demonstrated large tolerance to misalignment between emitter and receiver modules: +1.5/-1 mm along optical axis, lateral tolerance of +/-1 mm and angular tolerances of +/-1.5°. Reliable performances have been demonstrated over a temperature range from -30°C to 80°C and constraint environment as thermal and damp heat cycles and vibrations. Increase the data rate of the FSO device one step beyond up to 10 Gbps requires dealing with mode partitioning troubles generated by the use of VCSEL lasers. We designed and evaluated an improved opto-mechanical combination to overcome this drawback. The resulting device shows error free 10 Gbps data transfer while keeping large tolerance to Tx/Rx misalignments.

Planar optical integrated circuits based on UV-patternable sol-gel technology

Abstract: Planar lightwave circuits (PLCs) made from photo-patternable sol-gel materials are attracting considerable R&D interest. This is due to the advantages they offer for applications in optical telecommunications and their compatibility with existing silicon technology process equipment. In particular, the ability to produce devices compatible with silica optical fibres using a straightforward, environmentally friendly, photolithographic process is very attractive. The approach is now well-established in the literature and typically involves the incorporation of an acrylate moiety in the sol-gel precursor mixture, thereby providing a photo-polymerisability function. In this work, we report on the fabrication of passive optical components and devices designed for datacomms applications using visible diode lasers or the 1st telecom window. Silica-based sol-gel waveguides have been integrated in an opto-electronic multichip module (OE-MCM) demonstrator for optical interconnect applications. We have fabricated an 8-channel transmitter module for parallel optical interconnects (POI) based on 2 sub-modules: (a) an optical interface sub-assembly based on photo-patterned sol-gel optical waveguides, and (b) an optoelectronic component sub-module comprising an array of VCSELs. We describe here the fabrication, characterization and performance of the optical components and a POI Transmitter chip.

Optoelectronic module for a contactless free-space optical link, associated multichannel modules, associated interconnection system, method of production and connection to a board

Abstract: An optoelectronic module, intended to provide a conversion of an electrical signal from an electronic board into an optical signal propagated in free space or vice versa, includes the following stack: an electronic board, intended to act as an interface with an electronic application board; an electronic control component suitable for controlling an optoelectronic component, the electronic component being attached directly onto the electronic board and electrically connected to the electronic circuit; an optoelectronic component suitable for transmitting or receiving a light signal via its upper surface, the optoelectronic component being attached directly on the top of the electronic control component and electrically connected to the electronic component; an optical device suitable for transmitting an optical signal; an optical device support, the support being attached, preferably by gluing or brazing, directly onto the electronic board so as to ensure the mechanical alignment between the optical device and the optoelectronic component.

Integrated remote control signaling

Abstract: A serial transmission protocol and architecture are provided that can be used to forward remote control data between sink (e.g., DTV) and source (e.g., DVD player) devices, in addition to other data such as video and/or audio or other payload. The target device need not be in the line of sight of the remote control beam. Daisy-chained devices will pass the remote control signal to the appropriate target device, so that the user can point any remote control at the DTV or other conveniently located device in the system, and still control the actual target device. The communication channel that carries payload, processing control, and remote control data can be implemented with wired or wireless of technology (or a combination thereof). In one particular embodiment, the communication channel is implemented with a single fiber. A number of presentation and entertainment system applications that employ remote control technology (e.g., home theater, audio, and computer implemented systems) can benefit from embodiments of the present invention.

EDID pass through via serial channel

Abstract: Techniques are disclosed for passing Extended Display Identification Data (EDID) or Enhanced-EDID (E-EDID) in an uncompressed multimedia communication system including a video sink side communicatively coupled to a video source side. An EDID AVAILABLE packet is communicated via a serial backward channel from the video sink side. A REQUEST is communicated to the video sink side via a serial forward channel to indicate the video sink side can send the EDID data. The EDID data is then communicated to the video sink side via the serial backward channel.

Optical transceiver module

Abstract: There are provided a downsized and low-cost optical module used as a terminal for wavelength multiplexing optical transmission and one-core bidirectional optical transmission which transmits lights of plural wavelengths through one optical fiber, and a method of manufacturing the optical module. A base on which plural optical elements are mounted, and an optical multiplexer and demultiplexer having wavelength selection filters and mirrors formed on both surfaces of a substrate are prepared. Those two parts are packed into a package so that an optical element mounted surface and a filter surface are substantially parallel to each other, and the optical elements are arranged to emit or receive lights obliquely to the base. With this configuration, because the optical multiplexer and demultiplexer can be mounted in parallel to an X-Y plane, a package can be easily machined by using a lathe, thereby enabling a reduction in the costs.

Bidirectional hdcp transmission module using single optical fiber

Abstract: Techniques that provide cost effective optical fiber communication links for HDCP transmission systems and the like are provided. A single fiber for bidirectional communication is enabled, without wavelength selective unit to achieve the HDCP transmission. One embodiment of the present invention has a forward channel using a light source (e.g., VCSEL at about 850 nm) in the GHz modulation level (e.g., 1 GHz or greater), and a corresponding photodetector. The backward channel has a light source (e.g., LED at 630 nm) in the MHz modulation level (e.g., 10 MHz or less), and a corresponding photodetector. One application is for realizing a home entertainment system (e.g., DVD player and high definition television) that employs an HDCP-enabled communication link to transmit copy restricted digital content.

Universal remote control device

Abstract: A universal remote control device controls both first and second electronic devices that may be remote from each other, via different communication channels. The remote control device is used with an optical fiber network, including a first optical transceiver coupled to the first electronic device, a second optical transceiver coupled to the second electronic device, and an optical fiber coupled between the first optical transceiver and the second optical transceiver. The remote control device comprises an infrared (IR) transmitter for transmitting a first control signal for controlling the first electronic device via an IR communication channel, and a wireless communication interface for transmitting a second control signal for controlling the second electronic device to the first optical transceiver via a wireless communication channel. The second control signal is further transmitted from the first optical transceiver to the second electronic device via the optical fiber and the second optical transceiver.