Stmicroelectronics S.r.l.

Italtel Societa Italiana Telecomunicazioni S.p.a.

Italtel S.p.a.

Guido Chiaretti

Antonio Fincato

Alberto Pagani

Bruno Murari

Roberto Carminati

Sara Loi

Fabio Luigi Grilli

Lorenzo Sarchi

Flavio Francesco Villa

Gabriele Barlocchi

Alessandro Motta

Daniela Barge

Paolo Casati

Francesco Blandano

Mario Gerla

Giacomo Parafioriti

An integrated optical device, including: a semiconductor body delimited by a top surface; and at least one buried cavity, which extends in the semiconductor body, at a distance from the top surface, so as to delimit at the bottom a front semiconductor region, which functions as an optical guide.

Integrated optical device with a waveguide and related manufacturing process

A projective MEMS device, including: a fixed supporting structure made at least in part of semiconductor material; and a number of projective modules. Each projective module includes an optical source, fixed to the fixed supporting structure, and a microelectromechanical actuator, which includes a mobile structure and varies the position of the mobile structure with respect to the fixed supporting structure. Each projective module further includes an initial optical fiber, which is mechanically coupled to the mobile structure and optically couples to the optical source according to the position of the mobile structure.

Projective MEMS device for a picoprojector of the flying spot type and related manufacturing method

A spectrometer includes a substrate; a plurality of light detectors in the substrate; and a plurality of light filters over the plurality of light detectors, each of the plurality of light filters transmitting a different wavelength or reflecting a different wavelength, each of the light filters aligned with a corresponding one of the plurality of light detectors.

Spectrometer apparatus

An integrated electronic device, delimited by a first surface and by a second surface and including: a body made of semiconductor material, formed inside which is at least one optoelectronic component chosen between a detector and an emitter; and an optical path which is at least in part of a guided type and extends between the first surface and the second surface, the optical path traversing the body. The optoelectronic component is optically coupled, through the optical path, to a first portion of free space and a second portion of free space, which are arranged, respectively, above and underneath the first and second surfaces.

Integrated optoelectronic device and system with waveguide and manufacturing process thereof

A phase shift device of an optical fiber signal includes an actuator for changing the signal phase in at least one fiber portion by inducing the phase change by thermo-optical effect. An antenna system incorporating phase shift devices using the thermo-optical effect find particular utility in automotive and telecommunications fields.

Optical phase shift device and antenna system utilizing same

A multi-source optical transmitter includes a substrate of semiconductor material and a plurality of semiconductor optical sources suitable to provide optical signals having respective wavelengths defining base colors for the formation of colored images in said visualization device. The sources are arranged according to a matrix pattern on one face of the substrate.

Multi-source optical transmitter and photonic visualization device

Integrated optical network with controlled optical beam deflection and optical transmitter

An optical radiation coupling module includes a waveguide for the propagation of optical radiation, an optoelectronic device arranged on a substrate, and a mechanism for coupling the radiation between the waveguide and the optoelectronic device. The coupling mechanism includes a guiding element moulded and tapered in a radiation propagation direction.

Optical radiation coupling module

The optical communication module can be coupled to at least one optical fiber and includes at least one optoelectronic device, a base portion, and a cover portion which can be connected to the base portion to define an internal chamber to house the optoelectronic device. The cover portion includes at least one window to couple at least one optical signal between the at least one device and the optical fiber. The module further includes a plate, substantially transparent to the optical signal, having a first side facing the cover portion and a second side facing the internal chamber, the first plate substantially enabling sealing of the window. A shielding plate can be connected to the second side and provided with at least one opening substantially aligned with the window to enable passage of the optical signal.

Optical communication module

External cavity laser with reflector in optical wave guide, particularly HDBR laser, with an active element comprising a semiconductor optical amplifying cavity having a low-reflectivity facet (), for example a Semiconductor Optical Amplifier (SOA) with a facet () opposite to said low-reflectivity facet treated with a reflecting coating, or a Fabry-Perot laser, and an external reflector comprising a Bragg grating () formed in an optical wave guide () near a termination (), facing said facet, of a segment () of said optical wave guide coupled with the facet. The grating has a spatial profile of modulation of the refraction index such that a corresponding optical reflectivity spectrum (A) has an optical bandwidth (W) sufficiently small around a prescribed laser oscillation mode wavelength (&#x3b3;c) for the laser to oscillate only on the prescribed mode and not on other oscillation modes even in conditions of high-frequency direct modulation.

External cavity laser

An optical device is formed by a first chip and a second chip bonded together. The first chip (4 has an optical layer of glass housing an optical circuit; the second chip has a body of semiconductor material housing integrated electronic components and coated with a bonding layer of glass fixed directly and contiguous to the optical layer of the first chip. The bonding layer delimits cavities facing corresponding cavities in the first chip in positions corresponding to the intersection points of waveguides constituting the optical circuit. The cavities are filled with a liquid having the same refractive index as the waveguides. Underneath each cavity, in the body of semiconductor material there is present a resistor, which, when traversed by current, causes formation of a bubble inside the chamber and deflection of the light beam traversing a waveguide towards a different waveguide.

Optical device, in particular optical switching device with improved stability of the bubbles and reduced insertion losses

An optical module for access networks to wideband communication systems composed of passive optical networks PON, in such a way as to permit the transportation in particularly efficient manner of flows of numeric and/or analog information, relating to different types of services such as: telephone services in a broad sense, intended as traditional telephone services and data transmission services, and services of more strictly television nature such as the distribution of the CATV.

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Novate Milanese, Italy

Guido Chiaretti