Abstract: In the method and a device for detecting the phase of a moving object using a heterodyne interferometer, a heterogeneous mode helium-neon laser is used as a direct light source to increase a measuring speed, a measuring resolution, and minimize the loss of the light source. Signals, which have only a frequency difference between reference signals or measured signals and arbitrary signals, are extracted from signals which are obtained by multiplying the arbitrary frequency signals by the reference or measured signals. After frequencies of the reference and measured signals are converted, a phase difference of the extracted signals and displacement of the moving object is measured. The system includes a laser light source, an optical interferometer, a frequency converter, and a phase measurer. The light source uses output light, emitted from the laser generator, which is stabilized in frequency, and has two frequencies which are at right angles to each other and linearly polarized.

Abstract: The invention relates to a material which consists essentially of sand and polymers as well as optionally, a small quantity of aggregates. The invention also relates to a method for producing this material, comprising the following steps: producing a hot molten mixture consisting of sand and polymers; introducing said molten mixture into a mould; cooling the molten mixture under pressure until the molten mixture hardens in the mould. The material can be used e.g. for producing building blocks, pavement slabs, manhole covers, housings in electrical engineering and insulators for high-voltage applications.

Abstract: A beverage container (1) includes a cup-type compartment (2) having an opening (3) and a cover (4) to be placed on the opening (3), the cover (4) having an inner component (5) and an outer component (6) detachably connected to the inner component (5), between the inner component (5) and the outer component (6) connected to the inner component (5) a cavity (7) being formed for receiving at least one object (8), the cavity (7) includes two main surfaces (9, 10) being parallel to one another. It is characterized by that the two main surfaces (9, 10) of the cavity (7) are at an angle of 0°<?<90° to an opening plane (11) formed by the opening (3).

Abstract: An optical fiber connector plug includes a housing through which extends a cable containing at least one optical fiber. A ferrule, which is supported by the housing, is provided for receiving the optical fiber. The ferrule has a mating facet and an opposing rear facet located in the housing. The ferrule has at least one guide pin thru-hole and at least one optical fiber thru-hole extending between the mating facet and the opposing rear facet. The guide pin thru-hole has an opening portion extending inward from the mating facet. The opening portion is tapered outward to meet the mating facet in an oblique manner such that the opening portion has a diameter in the plane of the mating facet that is greater than a diameter of a remainder of the guide pin thru-hole.

Abstract: An undersea optical repeater is provided that includes a pressure vessel for use in an undersea environment. The pressure vessel has at least two cable-receiving elements for respectively receiving ends of optical cables that each includes an electrical conductor therein. At least one optical amplifier is located in the pressure vessel. The optical amplifier includes at least one electrical component adapted to receive electrical power from the electrical conductors in the optical cables. A dielectric envelope surrounds the pressure vessel to provide a hermetic seal therewith. The envelope includes a dielectric overmold surrounding at least a portion of the pressure vessel.