An optoelectronic module is disclosed comprising an optoelectronic component (D), e.g. a photodiode (D) and/or a laser diode (D); a ring (RI) as an optical aperture in a wall of its housing (S/E/P, S/G/W) for the transmission of information-modulated light to or from the component (D) through the housing wall (S) to or from an optical component (L); and a lens system (K) having at least one lens (K), among them, at least one focusing lens (K) encircled by the ring (RI) or at least by a section o...

A computer system that includes a plurality of processing elements for parallel computation utilizes a free-space optical network for communication between the processing elements. Such a network employs an optoelectronic switch that includes a binary H-type tree for routing signals to selected ones of an array of lasers. Hybrid repeaters are included in the optical paths to generate output optical beams colinear that are with incident input beams.

An optoelectronic transducer includes a fiber carrier having a groove formed in a major side with an optical fiber mounted in the groove and a reflecting surface positioned adjacent one end of the groove so as to direct light in-to/out-of the optical fiber. A photonic device carrier having a photonic device fixedly mounted on a major side. Mounting pads positioned on the major sides of the carriers are affixed together so that the photonic device is optically aligned with the reflecting surface ...

A single cavity mode optoelectronic device, such as a VCSEL, an RCLED or a DFB laser diode, comprises an etched-pillar or mesa structure including an optically active region and strain-applying means in the form of a layer of polymer material having a coefficient of thermal expansion which is greater than that of the optically active region. The layer surrounds the optically active region so as to apply a compressive strain to the latter so as to compensate at least partially for temperature-ind...

The invention relates to an optoelectronic sensor comprising a light transmitter for the transmission of light signals into a monitored region, and also a light receiver for the reception of light signals transmitted by the light transmitter, wherein an evaluation circuit which is directly or indirectly acted on by the light receiver is provided for the production of an article detection signal in the case when an object is present in the monitored region. The light receiver is formed as a spati...

A device for detecting the presence of an antigen including (1) a cell having antibodies which are expressed on the surface of the cell and are specific for the antigen to be detected, where binding of the antigen to the antibodies results in an increase in calcium concentration in the cytosol of the cell, the cell further having a emitter molecule which, in response to the increased calcium concentration in the cytosol, emits a photon; (2) a liquid medium for receiving the antigen and in which ...

The invention concerns optoelectronic circuits for an optical wavelength multiplexing system, the circuits being constructed with optical couplers (11; 39.2, 39.4) each having four branches (1,2,3, 4; 39.1, 39.3, 2.times.39.5; 2.times.39.6, 39.3, 39.7). Electrical and optical crosstalk is minimized both in integrated (FIG. 1) and hybrid (FIG. 5) constructions. To this end, photo diodes (6', 6"; 36) and laser diodes (5; 38) are each disposed on opposite sides of the couplers (11; 39.2, 39.4) and ...

An optoelectronic device based on a conduction constriction through which charge carriers pass ballistically. The constriction has a cross-sectional area of 2 square microns or less and a thickness D and is made of doped semiconductor material with a carrier mobility .mu.. The thickness D is selected to be near to a characteristic path length D.sub.mes defined by D.sup.2.sub.mes =(h/2e)*.mu. where h is Planck's constant and e the elementary charge. The device can be used as a heterodyne radiatio...

Optical components made of inorganic crystals, e.g. lithium niobate, have the drawback that they cannot be integrated on a semiconductor substrate. In addition to linear optical characteristics, polymer plastics also have strong, non-linear characteristics. According to the invention, these plastics are integrated on a semiconductor substrate and serve as polarizers, modulators, optical switches, etc. Additionally, they require less space than prior art crystals.

This invention relates to acrylic polymers and more specifically to polyalamides and polyacrylates such as poly{2-[(N-2-methyl-5-nitrophenylamino)ethyl acrylate]} and poly[(N-2-methyl-4-nitrophenyl)acrylamide]. These acrylic polymers are particularly useful as nonlinear optical components in various electrical devices for processing optical amplifiers, generators, computational devices and the like.