Abstract: The ability to estimate a filter clog by a means other than measuring fluid pressure is presented. The filter monitoring system of the present disclosure comprises a vibration data transmission unit, which is mounted on a filtration device, detecting filter vibrations associated with the operation of filtration device described above, sending such as vibration data, and a clog estimation unit, which detects the phenomenon of declining vibration value caused by a filter clog, estimating the degree of blockage for the filter described above.

Abstract: [Problems] The ability to estimate a filter clog by a means other than measuring fluid pressure. [Means for Solving the Problem] The filter monitoring system 1 of the present invention comprises a vibration data transmission unit, which is mounted on a filtration device 2, detecting filter vibrations associated with the operation of filtration device 2 described above, sending such as vibration data, and a clog estimation unit, which detects the phenomenon of declining vibration value caused by a filter clog, estimating the degree of blockage for the filter described above.

Abstract: An optical component of the present invention is compensated its optical dispersion, including third order dispersion, at low loss using optical dispersion compensating element comprising multi-layer film. In the optical component, an optical dispersion compensating element and a functional element are connected in series along an optical path.

Abstract: In the past, the occurrence of wavelength dispersion in signals transmitted through optical fibers caused considerable problems in terms of communications at a communications bit rate of 10 Gbps or more, and particularly optical communications at 20 Gbps or more. In order to solve the problems, though various proposals of dispersion compensation method and element have been made for its compensation, any of which did not solve it.

Abstract: An optical component of the present invention is compensated its optical dispersion, including third order dispersion, at low loss using optical dispersion compensating element comprising multi-layer film. In the optical component, an optical dispersion compensating element and a functional element are connected in series along an optical path.

Abstract: A completely thin-film coupled three-cavity dispersion compensation element enables dispersion compensation over wider bandwidths then similar elements having fewer coupled cavities. By cascading these dispersion compensation elements even greater compensation bandwidths can be obtained, thereby further increasing the merit and usefulness of this device.

Abstract: This invention, a composite dispersion compensation structure, made up of at least two dispersion compensation elements in an opposing arrangement, and at least one reflection element, can provide low cost dispersion compensation over a wide bandwidth by utilizing multiple reflections.

Abstract: This invention, a composite dispersion compensation structure made up of at least two dispersion compensation elements in an opposing arrangement, can provide low cost dispersion compensation over a wide bandwidth by utilizing multiple reflections.