Access point for constructing optical fiber-based high-speed...

Details Access point for constructing optical fiber-based high-speed... Access point for constructing optical fiber-based high-speed...

2003-09-25

2008-03-25

Li, Shi K (Department: 2613)

Optical communications

Hybrid communication system

C398S138000

Reexamination Certificate

active

07349633

ABSTRACT:
An access point in an optical fiber-based high-speed optical wireless network is disclosed. The access point includes an antenna for receiving communication requirement signals, a switch for selectively outputting a corresponding signal according to the communication requirement signals, a bias control unit for selectively outputting bias current with variable intensity according to whether an output of the signal from the switch exists or not, on the basis of a threshold current; a bias operation unit for outputting input signals to the antenna when an input bias current is smaller than the threshold current and for outputting signals received by the antenna when an input bias current is larger than the predetermined threshold current, and a semiconductor optical amplifier for selectively performing an optical detection function of converting optical signals, which have been received through a first optical fiber from an central station, into electrical signals and sending the converted electrical signals to the bias operation unit, when a current smaller than the threshold current is input to the bias operation unit, and an optical modulation function of transmitting signals output from the bias operation unit through a second optical fiber to the central station, when a current larger than the threshold current is input to the bias operation unit.

REFERENCES:
patent: 2003/0228151 (2003-12-01), Niiho et al.
patent: 2004/0108940 (2004-06-01), Witkow et al.
patent: 08-084133 (1996-03-01), None
patent: 10-229385 (1998-08-01), None

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