Device for providing enhanced chromatic dispersion tolerance and/or optical signal-to-noise ratio in a passive optical network

A device for providing enhanced chromatic dispersion tolerance and/or optical signal-to-noise ratio in a passive optical network structurally arranged to pass amplified uplink signals to an optical line terminal disposed at a hub site, comprising:

• an enhanced passive optical network extender structurally arranged to be connected to a hub site, comprising:
• a first terminal structurally arranged to receive a first optical signal from a remote node device of a passive optical network via a first optical link, wherein the first optical signal comprises wavelengths in the O-band, L-band, and/or C-band;
• a first Raman amplifier structurally arranged to amplify the O-band of the first optical signal to produce a first Raman amplified optical signal;
• an optical signal combiner/separator structurally arranged to separate the O-band of the first Raman amplified optical signal from the L-band and/or the C-band of the first Raman amplified optical signal;
• a first optical amplifier structurally arranged to amplify the O-band of the first Raman amplified optical signal to produce a first amplified uplink signal, wherein the first optical amplifier is a semiconductor optical amplifier (SOA);
• a second optical amplifier structurally arranged to amplify the L-band and/or the C-band of the first Raman amplified optical signal to obtain a second amplified uplink signal, wherein the second optical amplifier is an Erbium-doped fiber amplifier (EDFA);
• a second terminal structurally arranged to pass the first and second amplified uplink signals to an optical line terminal disposed at the hub site via a second optical link;
• and
• wherein the enhanced passive optical network extender is structurally arranged to extend passive optical network distances by enhancing chromatic dispersion tolerance and/or optical signal-to-noise ratio in the amplified optical signal of the O-band wavelength received from remote nodes of the passive optical network and providing the first amplified uplink signal to the optical line terminal disposed at the hub site during operation.

A device for providing enhanced chromatic dispersion tolerance and/or optical signal-to-noise ratio in a passive optical network structurally arranged to pass amplified uplink signals to an optical line terminal disposed at a hub site, comprising:

• an enhanced passive optical network extender structurally arranged to be connected to a hub site, comprising:
• a first Raman amplifier structurally arranged to amplify the O-band of a first optical signal received from a remote node device via a first optical link to produce a first Raman amplified optical signal;
• an optical signal combiner/separator structurally arranged to separate the O-band of the first Raman amplified optical signal from the L-band and/or the C-band of the first Raman amplified optical signal;
• a first optical amplifier structurally arranged to amplify the O-band of the first Raman amplified optical signal to produce a first amplified uplink signal;
• and
• wherein the enhanced passive optical network extender is structurally arranged to extend passive optical network distances by enhancing chromatic dispersion tolerance and/or optical signal-to-noise ratio in the amplified optical signal of the O-band wavelength received from remote nodes of a passive optical network and providing the first amplified uplink signal to an optical line terminal disposed at the hub site during operation.

A device for providing enhanced chromatic dispersion tolerance and/or optical signal-to-noise ratio in a passive optical network structurally arranged to pass amplified uplink signals to an optical line terminal disposed at a hub site, comprising:

• an enhanced passive optical network extender structurally arranged to be connected to a hub site, the enhanced passive optical network extender comprising:
• a first amplifier structurally arranged to amplify a received signal comprising an O-band wavelength to produce a first amplified signal;
• a signal combiner/separator structurally arranged to separate the O-band wavelength of the first amplified signal from any remaining wavelengths of the first amplified signal;
• a second amplifier structurally arranged to amplify the separated O-band wavelength of the first amplified signal to produce a first amplified uplink signal;
• and
• wherein the enhanced passive optical network extender is structurally arranged to extend passive optical network distances by enhancing chromatic dispersion tolerance and/or optical signal-to-noise ratio in the amplified optical signal of the O-band wavelength received from remote nodes of a passive optical network and providing the first amplified uplink signal to an optical line terminal disposed at the hub site during operation.