1651 results about "Single-core" patented technology

Method and apparatus for coupling electrical and communication circuits, included in a packaged semiconductor comprising photo receivers, photo transmitters and photovoltaic cells, through lightguide and optical fiber cables. The packaged semiconductor combinations comprise one, two or plurality of photo elements for a single or plurality one way optical signal, receive or transmit, and a single or plurality of two way optical signal communications via direct optical links and via optical prisms, filters, half mirrors and lenses. The packaged semiconductor includes at least one optical access to a single or plurality of lightguides or optical fiber with single core and for multicore lightguides. A built-in or attachable holders are used for attaching the different lightguide cables to the one or plurality of optical accesses with the attached cable end is terminated by cutting, trimming and shaping. The packaged circuit comprising electrical switches, current sensors, basic elements such as diodes, transistors and FETs, switches and power switches and different basic electrical circuit and communication, distribution circuits including CPU, DSP and complex semiconductor circuits, as used for communicating within limited short distances through optical network of lightguides and fiber optical cables. A packaged semiconductor of an SPDT power switch circuit is integrated with an SPDT manually activated switch, for providing dual switching for lights and other electrical appliances, via manual action and remotely via the lightguide or the optical fiber.

A non-invasive near infrared spectrophotometric monitoring transducer assembly includes a housing member, which is adhered directly on a patient's skin. The housing member contains a prism coupled to a flexible and lightweight single core optical light guide, which provides a means of transferring narrow spectral bandwidth light from multiple distant laser diodes of different wavelengths by use of a multi-fiber optic light combining assembly. Different wavelengths are needed to monitor the level of blood oxygenation in the patient. The assembly also contains a planar light guide mounted on the prism located in the housing member, which light guide contacts the patient's skin when the housing member is adhered to the patient's skin. The light guide controls the spacing between the prism and the patient's skin, and therefore controls the intensity of the area on the patient's skin which is illuminated by the laser light. The housing member contains a photodiode assembly, which detects the infrared light at a second location on the skin to determine light absorption. The photodiode assembly is preferably shielded from ambient electromagnetic interference (EMI) by an optically transparent EMI attenuating window. This rigid window placed over the photodiode also provides a planar interface between the assembly and the skin, improving optical coupling and stability as well as reducing the capacitive coupling between skin and the photodiode resulting in further EMI attenuation. The housing may be associated with a disposable sterile hydrogel coated adhesive envelope, or pad, which when applied to the patient's skin will adhere the housing to the patient's skin. The transducer assembly will thus be reusable, and skin-contacting part of the device, i.e., the envelope or pad can be discarded after a single use. The assembly also includes a laser safety interlock means, which is operable to turn off the laser light output in the event that the assembly accidentally becomes detached from the patient's skin.

Provided is a single-core coated optical fiber (11) having such a curve loss characteristic that an optical loss increase at a bending radius 13 mm is 0.2 dB / 10 turn or below. An optical fiber tape conductor includes two-dimensionally arranged resin portions (18) for bonding each two adjacent single-core coated optical fibers (11). The resin portions (18) are arranged apart from one another in the longitudinal direction of the optical fiber tape conductor. An optical fiber cable includes a cable core unit for containing a plurality of sets of the single-core coated optical fibers (11) constituting the optical fiber tape conductor which are twisted together.