Optical communication apparatus

Details Optical communication apparatus Optical communication apparatus

1998-02-20

2000-11-21

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359157, H04B 10002

Patent

active

061511471

ABSTRACT:
An optical communication apparatus is provided that enhances the reliability of light source by extending the lifetime thereof without requiring a power supply line to generate the light signal. The light source produces light of a wide wavelength band when the system is operating. The system has a plurality of transmitting units and corresponding light receiving elements. When a switch in a particular transmitting unit is turned on, light of a specific wavelength wave-branched and reflected by a wave-separate filter is cut-off by the switch and the remaining light containing other wavelengths is transmitted to receiving units through a post-transmitting unit. In the receiving units, a light receiving element corresponding to the particular transmitting unit does not receive light of the specific wavelength when the corresponding switch is turned on. Other light receiving elements, however, receive light of a corresponding wavelength regardless of the state of the non-corresponding switch.

REFERENCES:
patent: 4761777 (1988-08-01), Edwards et al.
patent: 5751455 (1998-05-01), Shibutani et al.

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