Patent ID: 8014672
Filing Date: 2011-09-06
Classification: H04B,H04J

Abstract:
1. An optical TX/RX device for transmitting and receiving wavelength-multiplexed signal light, comprising: an optical RX means capable of varying a RX wavelength; an optical TX means capable of varying a TX wavelength; a detection means for detecting RX wavelengths not in use via the optical RX means; a storage means provided with a correspondence table between the RX wavelengths selectable for the optical RX means and the TX wavelengths selectable for the optical TX means; and a wavelength control means for assigning one of the RX wavelengths detected by the detection means to the RX wavelength of the optical RX means and for assigning a TX wavelength corresponding to the RX wavelength assigned based on the correspondence table in the storage means to the TX wavelength of the optical TX means, wherein, upon assigning the RX wavelength assigning the TX wavelength of the optical TX means, the optical TX means is configured to transmit an optical signal on the assigned TX wavelength, and the optical TX/RX device is configured to initiate communication using the optical TX means with the assigned TX wavelength and the optical RX means with the assigned RX wavelength if the optical RX means receives a response signal on the assigned RX wavelength to the optical signal transmitted from the optical TX means on the assigned TX wavelength.