| 摘要 |
PROBLEM TO BE SOLVED: To allow for efficient migration work in system switching from EPON to GE-PON, without changing the configuration of an OLT.SOLUTION: The ONU includes an optical divider 101 which outputs a downlink signal from an OLT2 while branching to a downlink signal of a wavelength band assigned by an EPON, and a downlink signal of a wavelength band assigned by a GE-PON, an EPON termination circuit 103 which terminates the downlink signal of a wavelength band assigned by the EPON from the optical divider 101, and a GE-PON termination circuit 106 which terminates the downlink signal of a wavelength band assigned by the GE-PON from the optical divider 101. |
