Abstract: In one aspect, there is disclosed a process for enabling communication of a communication device over a spectrum including the steps of: providing a communication device, detecting available analog signals, analyzing the detected analog signals, connecting to a highest energy signal, and repeating these steps.

Abstract: In one aspect, there is disclosed a process for enabling communication of a communication device over a spectrum including the steps of: providing a communication device, detecting available analog signals, analyzing the detected analog signals, connecting to a highest energy signal, and repeating these steps.

Abstract: A liquid crystal variable wavelength filter unit and its driving method applicable for a Wavelength Division Multiplexing (WDM) communication system and an optical network using an optical fiber. The liquid crystal variable wavelength filter unit (130) includes a band pass filter (111) configured of a dielectric multi-layered film inclined by a predetermined angle of ? between a first liquid crystal beam deflector (101) and a second liquid crystal beam deflector (103) and held between a first wedge prism (121) and a second wedge prism (123). The first drive device (141) is connected to the first liquid crystal beam deflector (101), and the second drive device (143) is connected to the second liquid crystal beam deflector (103). The wavelength is selected by the liquid crystal beam deflector by making the outgoing angle variable with respect to the band pass filter.

Abstract: A liquid crystal variable wavelength filter unit and its driving method applicable for a Wavelength Division Multiplexing (WDM) communication system and an optical network using an optical fiber. The liquid crystal variable wavelength filter unit (130) includes a band pass filter (111) configured of a dielectric multi-layered film inclined by a predetermined angle of a between a first liquid crystal beam deflector (101) and a second liquid crystal beam deflector (103) and held between a first wedge prism (121) and a second wedge prism (123). The first drive device (141) is connected to the first liquid crystal beam deflector (101), and the second drive device (143) is connected to the second liquid crystal beam deflector (103). The wavelength is selected by the liquid crystal beam deflector by making the outgoing angle variable with respect to the band pass filter.

Abstract: A transformer comprising two C-shaped core parts arranged to form a core ring with one or more coil formers which are molded on one core leg or on both oppositely situated core legs, the core ring being interrupted between the moulded coil formers.