Patent ID: 11881893
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. The dispersion compensation method according to claim 8, wherein
the OLT is connected to the merge port of the asymmetrical optical splitter via the dispersion compensation optical fiber,
one terminal of the transmission optical fiber is connected to the split port to which one of the second ports of the split portion of the first stage of the split ports of the asymmetrical optical splitter is connected,
the other terminal of the transmission optical fiber is connected to the optical network,
the ONU has a Fabry Perot laser diode to transmit an uplink signal,
the dispersion compensation optical fiber has negative dispersion values with respect to an entirety of an oscillation spectrum of the Fabry Perot laser diode, and
the transmission optical fiber has positive dispersion values with respect to some wavelengths of the oscillation spectrum of the Fabry Perot laser diode.