Measurement method by OTDR and terminal station apparatus
AssigneesFujitsu Limited, Nippon Telegraph and Telephone Corporation
InventorsTakayuki Maehara, Shinichirou Harasawa, Gentaro Funatsu, Hideki Maeda, Akira Naka
Life of this patent
Estimating the term…
Abstract
In a method for performing OTDR measurement in an optical transmission system including a first terminal station and a second terminal station, OTDR signal light is transmitted from an OTDR provided in the first terminal station to the second terminal station, in which the OTDR signal light is Raman amplified by using main signal light of the optical transmission system as pump light.
Claims4
A terminal station apparatus in an optical transmission system, the terminal station apparatus including a transmitting apparatus for transmitting main signal light to a first optical transmission line and a receiving apparatus for receiving main signal light from a second optical transmission line,
- the terminal station apparatus comprising a part for transmitting the main signal light from the transmitting apparatus to the second optical transmission line.
An optical transmission system comprising a first terminal station apparatus and a second terminal station apparatus,
- wherein the first terminal station apparatus includes a transmitting apparatus for transmitting main signal light to a first optical transmission line, and a receiving apparatus for receiving main signal light from a second optical transmission line,
- the second terminal station apparatus includes a transmitting apparatus for transmitting main signal light to the second optical transmission line, and a receiving apparatus for receiving main signal light from the first optical transmission line,
- the optical transmission system includes a part for transmitting main signal light transmitted from the transmitting apparatus in the first terminal station apparatus to the second optical transmission line.
Dependencies are inferred from the claim text.