| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of parts in a whole network in an optical ring-like network using plural wavelengths. SOLUTION: In the optical ring-like network, plural node are connected to the same ring-like transmission line. One of n-pieces (n is the integer of not less than 2) of wavelengths is allocated to each of the nodes and the nodes transmit/receive the light signal of the allocated wavelength. |
