Patent ID: 7349633
Filing Date: 2008-03-25
Classification: H04B

Abstract:
1. An access point in an optical fiber-based wireless network, the access point comprising: an antenna for transceiving signals and receiving a communication requirement signal transmitted from an external device; a semiconductor optical amplifier for selectively performing an optical detection function of converting optical signals, which have been received through a first optical fiber, into electrical signals and sending the converted electrical signals through the antenna, and an optical modulation function of converting signals, which have been received by the antenna, into optical signals and transmitting the converted optical signals through second optical fiber, according to the communication requirement signals, and the communication requirement signal includes at least one of reception requirement signal in order to receive corresponding data and transmission requirement signals transmitted by the external device in order to transmit corresponding data; a switch for selectively outputting a signal for providing corresponding command according to the communication requirement signal received by the antenna; 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 predetermined threshold current; and a bias operation unit for outputting signals transmitted from the semiconductor optical amplifier to the antenna when a bias current, which is smaller than the predetermined threshold current, is output from the bias control unit, and for outputting signals received by the antenna to the semiconductor optical amplifier when a bias current, which is larger than the predetermined threshold current, is outputted from the bias control unit.