| 摘要 |
PROBLEM TO BE SOLVED: To establish a common wireless/wired (optical) high-speed communication technique in WDM-PON with reduced ONU cost to economically achieve a broadband ubiquitous network.SOLUTION: Each of a wired colorless ONU 101 and a wireless colorless ONU 102 includes: an O/E 13 for converting downlink signal light modulated by a frequency of a millimeter wave band into an electric signal; a common circuit 12 for converting the electric signal from the O/E 13 into a baseband signal to demodulate the downlink signal, and for transmitting uplink signal light modulated by an uplink signal; and a MUX/DMX 15 for demultiplexing downlink signal light input from an external terminal to output to the O/E 13, and for outputting the uplink signal light input from the common circuit 12 from an external terminal. |
