Optical transmission apparatus
AssigneeFujitsu Limited
InventorsMiki Onaka, Yasushi Sugaya, Hiroki Ooi
Life of this patent
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Abstract
An optical transmission apparatus includes an optical add drop multiplexer (OADM) that adds/drops an optical signal to/from a transmission path. The optical transmission apparatus further includes a pump light multiplexer and a dispersion compensation fiber that are located downstream of the OADM on the transmission path. The optical transmission apparatus is configured to house a pump light source connectable to the pump light multiplexer to Raman amplify an optical signal in the dispersion compensation fiber.
Claims15
An optical transmission apparatus with an optical add drop multiplexer (OADM) that adds/drops an optical signal to/from a transmission path, the optical transmission-apparatus comprising:
- a pump light multiplexer that is located downstream of the OADM on the transmission path;
- and
- a dispersion compensation fiber that is located downstream of the OADM on the transmission path, wherein
- the optical transmission apparatus is configured to house a pump light source connectable to the pump light multiplexer to Raman amplify an optical signal in the dispersion compensation fiber.
An optical transmission apparatus comprising:
- an optical add drop multiplexer (OADM) that adds/drops an optical signal to/from a transmission path;
- a pre-amplifying unit that is located upstream of the OADM on the transmission path and includes a first pump light multiplexer;
- and
- a post-amplifying unit that is located downstream of the OADM on the transmission path and includes a second pump light multiplexer and a dispersion compensation fiber, wherein
- the pre-amplifying unit is configured to house a first pump light source connectable to the first pump light multiplexer to Raman amplify an optical signal on the transmission path, and
- the post-amplifying unit is configured to house a second pump light source connectable to the second pump light multiplexer to Raman amplify an optical signal in the dispersion compensation fiber.
Dependencies are inferred from the claim text.