A directional coupler uses non-metallic slotted spacers at the edges of a pair of coupled lines. The spacers are adjustable in their vertical position and thereby provide continuous coupling fine-adjustment. The spatial relationship between the coupled lines is therefore adjustable and does not depend upon extremely tight manufacturing tolerances.

An optical coupler including a substrate, a diffractive optical element defined in the substrate, the diffractive optical element structured to receive incident light diverging from a first location and to focus the incident light at a second location opposite the first location, an electro-optical device mounted on the substrate to one of (a) emit light from and (b) receive light at one of the locations, and an optical waveguide mounted on the substrate to one of (a) receive light at and (b) em...

A multilayer coupled-lines directional coupler of the quarter wavelength type comprises a first, a second and a third conductive layer, joined by means of dielectric layers. The first conductive layer comprises a first and a second conductive strip, separated, mutually parallel, each in one end connected to a first output and in another end connected to a second output. The second conductive layer comprises a third conductive strip, parallel to the first and the second conductive strip, in one e...

A high power, TEM mode directional microwave coupler having low loss and expanded bandwidth uses novel thick suspended substrate conductors to provide multi-octave bandwidth performance in a practical package. Each of two center conductors is formed using metal layer deposited onto three surfaces of a thick dielectric substrate. The conductors, which can be edge-coupled or offset-coupled, form a novel structure in which the non-metallized side of the substrate is oriented toward the facing outsi...

An optical coupler comprises a tapered waveguide formed so that a waveguide width may be narrower as going from a predetermined starting position toward an emission end of a light signal. A difference between a first coupling factor and a second coupling factor is set within a predetermined range. The first coupling factor is the coupling factor to a waveguide having the same width as that in a first position in an inherent mode in the case where the tapered waveguide is cut in the first positio...

Conventionally, waveguide terminals formed in a plurality of dielectric substrates are joined together by mounting the dielectric substrates on carriers and fastening them to a waveguide adapter with screws. In the present invention, ot reduce cost and improve machinability, a plurality of solders 7 are disposed around the waveguide terminal 2b formed in one dielectric substrate 1b, and the other dielectric substrate 1a having the waveguide terminal 2a is placed across the solders 7 to thereby c...

A ball hitch coupler for use with a towing vehicle having a ball hitch. The ball hitch coupler provides an improved and simplified structure designed to make assembly and coupling to the ball hitch easy, while not compromising coupler strength or security. The ball hitch coupler comprises a coupler housing having a ball hitch cavity, a locking passageway also located in the coupler housing, and a locking rod having a keyed section. The locking rod operates as a restraining mechanism to hold the ...

An installation coupler is disclosed for connecting a first cable (306) to a second cable (330) in and installation for supplying power to at least two workstations (322) via a free set of plug pin socket contacts (314) and via the second cable (330). The first cable (306) has a double female installation socket (300) with two sets of contacts (314) and the second cable (330) has a male installation plug (304) that can be plugged into at least one of the sets of contacts (314), with a predetermi...

An optical coupler including optical fibers having gaps between first coverings and second coverings corresponding thereto. Each cladding of the two optical fibers is formed into a proper shape, with a taper of a proper thickness. The two optical fibers are then joined together, forming a joined portion which engages an engaging groove in a pair of blocks and the pair of blocks are affixed together by welding. Thereafter, the second coverings are affixed to cutouts in a retainer member. Lastly, ...

An optical coupler. The coupler has an optical element for transferring an optical signal from an entrance region, external to the optical unit, to an exit region, also external to the optical unit. The coupling element has a first substantially planar transmitting surface lying in a first plane, a second substantially planar transmitting surface lying in a second plane not coplanar with the first plane, a first substantially planar reflecting surface substantially perpendicular to the first tra...