Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1992-03-26
1994-02-22
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359172, 359176, H04B 1016
Patent
active
052893065
ABSTRACT:
A repeater for packet data optical communication between terminal devices includes a first section and a second section. The first section includes a first device for receiving a first optical signal transmitted from a terminal device and for converting the first optical signal into a first electric signal, a second device for frequency-converting the first electric signal to a second electric signal, and a third device for converting the second electric signal into a second optical signal and for transmitting the second optical signal. The second section includes a fourth device for receiving a third optical signal and for converting the third optical signal into a third electric signal, a fifth device for frequency-converting the third electric signal to a fourth electric signal, and a sixth device for converting the fourth electric signal into a fourth optical signal and for transmitting the fourth optical signal to a terminal device.
REFERENCES:
patent: 4648131 (1987-03-01), Kawaguchi
patent: 4809257 (1989-02-01), Gantenbein et al.
patent: 4959874 (1990-09-01), Saruta
patent: 4977619 (1990-12-01), Crimmins
Wu et al, "Decreasing Survivable Fiber Network Cost Using Optical Switches", IEEE Global Telecommunications Conference and Exhibition, Hollywood, Fla., Nov. 28-Dec. 1, 1988, vol. 1, pp. 3.6.1-3.6.5.
Hirohashi Kazutoshi
Nomoto Takeshi
Takeda Takaaki
Ushijima Keishi
Yoshikawa Akio
NTT Data Communications Systems Corp.
Pascal Leslie
Victor Company of Japan
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