Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1993-10-18
1996-05-28
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359128, H04J 1402
Patent
active
055217338
ABSTRACT:
An optical switching device for dividing an optical input which was wavelength-multiplexed into a plurality of optical outputs by wavelengths is disclosed. The device comprises a first filtering circuit and a second filtering circuit. The first filtering circuit has a plurality of interference filters disposed in line on an optical path of the optical input. The interference filters have different edge wavelengths each other so as to reflect a component with a predetermined wavelength of the optical input and to transmit the remaining components of the optical input. The second filtering circuit has a plurality of interference filters disposed on respective optical paths of reflected rays of the first filtering circuit. The interference filters of the second filtering circuit have different edge wavelengths each other so as to remove components with unnecessary wavelengths from the reflected ray and extract optical outputs.
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Akiyama Minoru
Akram Hossain M.
Mizusawa Jun-ichi
Watanabe Tsutomu
Akiyama Minoru
Fujikura Ltd
Mizusawa Jun-ichi
Pascal Leslie
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