Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-01-10
2000-04-25
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359130, 359173, H04B 1018
Patent
active
060550813
ABSTRACT:
In a chromatic dispersion compensator, an optical signal directing unit such as an optical circulator or a directional coupler having a first, second, third and fourth ports. The optical signal directing unit directs an optical signal inputted from one of the ports to another port of the ports. A reflection-type compensator including a dispersion compensating fiber, a reflecting portion and changing unit for changing a polarization direction of a reciprocating signal light, in which the dispersion compensating fiber is connected to the reflecting portion via the changing unit. An input transmission path which is connected to the first port; and an output transmission path which is connected to the fourth port so that the signal light is outputted from the fourth port. The reflection-type compensating unit is connected to one of the second and third ports, and the chirped grating is connected to the other port.
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Koyano Yasushi
Shigematsu Masayuki
Pascal Leslie
Sumitomo Electric Industries Ltd.
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