Abstract: A method is provided for sealing a container into which optical fibers are fed. A portion of the optical fibers is accommodated between two strips which are sealed together by applying heat and/or pressure. The strips are then placed in an opening of the container and the container is sealed. The strips, which may be made of plastic, support the fibers while providing an excellent seal.

Abstract: A method is provided for sealing a container into which optical fibres are fed. A portion of the optical fibres is accommodated between two strips which are sealed together by applying heat and/or pressure. The strips are then placed in an opening of the container and the container is sealed. The strips, which may be made of plastic, support the fibres while providing an excellent seal.

Abstract: A method is provided for sealing a container into which optical fibers are fed. A portion of the optical fibers is accommodated between two strips which are sealed together by applying heat and/or pressure. The strips are then placed in an opening of the container and the container is sealed. The strips, which may be made of plastic, support the fibers while providing an excellent seal.

Abstract: A device (1) for sealingly enclosing at least one optical circuit (10), the device comprising a container (3) and a humidity control means (4) accommodated in the container (3). The device is characterised by temperature control means (5, 6) arranged in the container (3). The container (3) is preferably flexible.

Abstract: A method is provided for sealing a container into which optical fibres (10) are fed. A portion of the optical fibres (10) is accommodated between two strips (3, 4) which are sealed together by applying beat and/or pressure. The strips are then placed in an opening of the container and the container is sealed. The strips (3, 4), which may be made of plastic, support the fibres (10) while providing an excellent seal.

Abstract: In order to have with an integratable solid state relay a galvanic isolation between the control and the switch similar to that of a mechanical relay the control is performed via DC/DC-converters in a classical voltage-doubler circuit configuration. The switch function is provided by a pair of complementary MOS-transistors (Tr.sub.1 and Tr.sub.2) the gate/source capacitances (C.sub.gs) of which are used as charging capacitances of the DC/DC-converters. In order to have a perfect blocking of the MOS-switches two DC/DC-converters (C.sub.1,C.sub.2,D.sub.1,D.sub.2,C.sub.gs ; C.sub.3,C.sub.2,D.sub.3,D.sub.5,C.sub.gs) are provided which are controlled by two signals in the phase opposition so that for both switching states the same noise margin capability and the same switching-over times result. The circuit arrangement includes only diodes, MOS-transistors and capacitances (C.sub.1,C.sub.2,C.sub.3) of very small value which can be integrated without any difficulties.