Pluggable optical host and network I/O optoelectronic module

1. A pluggable optical host and network I/O optoelectronic module comprising:

a first optical-electrical-optical (OEO) converter configured to convert N inbound optical signals to M inbound optical signals, the first OEO converter comprising:

N network-side optical receivers;

first signal processing circuitry communicatively coupled to the N network-side optical receivers; and

M host-side optical transmitters communicatively coupled to the first signal processing circuitry; and

a second OEO converter configured to convert M outbound optical signals to N outbound optical signals, the second OEO converter comprising:

M host-side optical receivers;

second signal processing circuitry communicatively coupled to the M host-side optical receivers; and

N network-side optical transmitters communicatively coupled to the second signal processing circuitry.

2. The pluggable optical host and network I/O optoelectronic module of claim 1 , wherein:

each of the N inbound optical signals and each of the N outbound optical signals comprises a 50 gigabaud (GBaud) optical data signal with PAM-4 modulation; and

each of the M outbound optical signals and each of the M inbound optical signals comprises a 100 gigabit per second optical data signal with non-return to zero (NRZ) modulation.

3. The pluggable optical host and network I/O optoelectronic module of claim 1 , wherein M is equal to N.

4. The pluggable optical host and network I/O optoelectronic module of claim 1 , wherein:

the first signal processing circuitry includes:

N network-side post amplifiers communicatively coupled to the N network-side optical receivers;

a first clock and data recovery circuit (CDR) communicatively coupled to the N network-side post amplifiers; and

M host-side drivers communicatively coupled to the first CDR and to the M host-side optical transmitters; and

the second signal processing circuitry includes:

M host-side post amplifiers communicatively coupled to the M host-side optical receivers;

a second CDR communicatively coupled to the M host-side post amplifiers; and

N network-side drivers communicatively coupled to the second CDR and to the N network-side optical transmitters.

5. The pluggable optical host and network I/O optoelectronic module of claim 4 , wherein:

N is not equal to M;

the first signal processing circuitry further includes an N-to-M gearbox coupled between the first CDR and the M host-side drivers; and

the second signal processing circuitry further includes an M-to-N gearbox coupled between the second CDR and the N network-side drivers.

6. The pluggable optical host and network I/O optoelectronic module of claim 1 , wherein the first OEO is configured to convert the N inbound optical signals to M inbound optical signals by performing at least one of:

changing a signal modulation from a first signal modulation in the N inbound optical signals to a different second signal modulation in the M inbound optical signals;

changing a per-channel symbol rate from a first per-channel symbol rate in the N inbound optical signals to a different second per-channel symbol rate in the M inbound optical signals;

changing a channel number from N channels in the N inbound optical signals to M channels in the M inbound optical signals, where N is not equal to M; and

changing a per-channel bit rate from a first per-channel bit rate in the N inbound optical signals to a different second per-channel bit rate in the M inbound optical signals.

7. The pluggable optical host and network I/O optoelectronic module of claim 1 , further comprising:

a host-side receptacle configured to receive a 2×M multiple-fiber push-on/pull-off (MPO) multi-mode fiber (MMF) connector, wherein each of the M inbound optical signals is emitted through the 2×M MPO MMF connector onto a corresponding one of M inbound MMF optical fibers and each of the M outbound optical signals is received through the 2×M MPO MMF connector from a corresponding one of M outbound MMF optical fibers; and

a network-side receptacle configured to receive a 2×1 Little Connector (LC) connector, wherein the N inbound optical signals are received through the 2×1 LC connector from a first single-mode fiber (SMF) on which the N inbound optical signals are wavelength multiplexed and the N outbound optical signals are emitted through the 2×1 LC connector into a second SMF on which the N outbound optical signals are wavelength multiplexed.

8. The pluggable optical host and network I/O optoelectronic module of claim 7 , further comprising:

a 1×N wavelength division demultiplexer positioned in an optical path of the N inbound optical signals between the 2×1 LC connector and the first OEO converter; and

an N×1 wavelength division multiplexer positioned in an optical path of the N outbound optical signals between the 2×1 LC connector and the second OEO converter.

9. The pluggable optical host and network I/O optoelectronic module of claim 1 , wherein:

the first signal processing circuitry includes:

an N-channel receive (RX) demodulation and detection block communicatively coupled to the N network-side optical receivers;

an N-to-M gearbox communicatively coupled to the N-channel RX demodulation and detection block;

an M-channel transmit (TX) modulation block communicatively coupled to the N-to-M gearbox; and

an M-channel driver communicatively coupled to the M-channel TX modulation block and to the M host-side optical transmitters; and

the second signal processing circuitry includes:

an M-channel RX demodulation and detection block communicatively coupled to the M host-side optical receivers;

an M-to-N gearbox communicatively coupled to the M-channel RX demodulation and detection block;

an N-channel TX modulation block communicatively coupled to the M-to-N gearbox; and

an N-channel driver communicatively coupled to the N-channel TX modulation block and to the N network-side optical transmitters.

10. The pluggable optical host and network I/O optoelectronic module of claim 9 , wherein:

the first signal processing circuitry further includes:

an N-channel analog-to-digital converter (ADC) coupled between the N network-side optical receivers and the N-channel RX demodulation and detection block; and

an M-channel digital-to-analog converter (DAC) coupled between the M-channel TX modulation block and the M-channel driver;

the second signal processing circuitry further includes:

an M-channel ADC coupled between the M host-side optical receivers and the M-channel RX demodulation and detection block; and

an N-channel DAC coupled between the N-channel TX modulation block and the N-channel driver;

the M-channel driver comprises an M-channel linear driver; and

the N-channel driver comprises an N-channel linear driver.

11. A method of communicating optical signals between a network and a host in a pluggable optical host and network I/O optoelectronic module, the method comprising:

receiving N inbound optical signals from a network;

converting the N inbound optical signals, each comprising a 50 gigabaud (GBaud) optical data signal with PAM-4 modulation, to M inbound optical signals, each comprising a 100 gigabit per second optical data signal with non-return to zero (NRZ) modulation;

emitting the M inbound optical signals to a host;

receiving M outbound optical signals from the host;

converting the M outbound optical signals, each comprising a 100 gigabit per second optical data signal with NRZ modulation, to N outbound optical signals, each comprising a 50 GBaud optical data signal with PAM-4 modulation; and

emitting the N outbound optical signals to the network.

12. A pluggable optical host and network I/O optoelectronic module comprising:

N network-side optical receivers configured to receive N inbound optical signals and to convert the N inbound optical signals to N inbound electrical signals;

first signal processing circuitry communicatively coupled to the N network-side optical receivers and configured to convert the N inbound electrical signals to M inbound electrical signals;

M host-side optical transmitters communicatively coupled to the first signal processing circuitry and configured to receive the M inbound electrical signals and to convert the M inbound electrical signals to M inbound optical signals;

M host-side optical receivers configured to receive M outbound optical signals and to convert the M outbound optical signals to M outbound electrical signals;

second signal processing circuitry communicatively coupled to the M host-side optical receivers and configured to convert the M outbound electrical signals to N outbound electrical signals;

N network-side optical transmitters communicatively coupled to the second signal processing circuitry and configured to receive the N outbound electrical signals and to convert the N outbound electrical signals to N outbound optical signals;

a host-side receptacle configured to receive a 2×M multiple-fiber push-on/pull-off (MPO) multi-mode fiber (MMF) connector, wherein each of the M inbound optical signals is emitted through the 2×M MPO MMF connector onto a corresponding one of M inbound MMF optical fibers and each of the M outbound optical signals is received through the 2×M MPO MMF connector from a corresponding one of M outbound MMF optical fibers; and

a network-side receptacle configured to receive a 2×1 Little Connector (LC) connector, wherein the N inbound optical signals are received through the 2×1 LC connector from a first single-mode fiber (SMF) on which the N inbound optical signals are wavelength multiplexed and the N outbound optical signals are emitted through the 2×1 LC connector into a second SMF on which the N outbound optical signals are wavelength multiplexed.

13. The pluggable optical host and network I/O optoelectronic module of claim 12 , wherein:

each of the N inbound optical signals and each of the N outbound optical signals comprises a 50 gigabaud (GBaud) optical data signal with PAM-4 modulation;

each of the M outbound optical signals and each of the M inbound optical signals comprises a 100 gigabit per second optical data signal with non-return to zero (NRZ) modulation.

14. The pluggable optical host and network I/O optoelectronic module of claim 12 , wherein:

the first signal processing circuitry includes:

N network-side post amplifiers communicatively coupled to the N network-side optical receivers;

a first clock and data recovery circuit (CDR) communicatively coupled to the N network-side post amplifiers; and

M host-side drivers communicatively coupled to the first CDR and to the M host-side optical transmitters; and

the second signal processing circuitry includes:

M host-side post amplifiers communicatively coupled to the M host-side optical receivers;

a second CDR communicatively coupled to the M host-side post amplifiers; and

N network-side drivers communicatively coupled to the second CDR and to the N network-side optical transmitters.

15. The pluggable optical host and network I/O optoelectronic module of claim 14 , wherein:

N is not equal to M;

the first signal processing circuitry further includes an N-to-M gearbox coupled between the first CDR and the M host-side drivers; and

the second signal processing circuitry further includes an M-to-N gearbox coupled between the second CDR and the N network-side drivers.

16. A pluggable optical host and network I/O optoelectronic module comprising:

N network-side optical receivers configured to receive N inbound optical signals and to convert the N inbound optical signals to N inbound electrical signals;

first signal processing circuitry communicatively coupled to the N network-side optical receivers and configured to convert the N inbound electrical signals to M inbound electrical signals;

M host-side optical transmitters communicatively coupled to the first signal processing circuitry and configured to receive the M inbound electrical signals and to convert the M inbound electrical signals to M inbound optical signals;

M host-side optical receivers configured to receive M outbound optical signals and to convert the M outbound optical signals to M outbound electrical signals;

second signal processing circuitry communicatively coupled to the M host-side optical receivers and configured to convert the M outbound electrical signals to N outbound electrical signals; and

N network-side optical transmitters communicatively coupled to the second signal processing circuitry and configured to receive the N outbound electrical signals and to convert the N outbound electrical signals to N outbound optical signals, wherein:

each of the N inbound optical signals and each of the N outbound optical signals comprises a 50 gigabaud (GBaud) optical data signal with PAM-4 modulation;

each of the M outbound optical signals and each of the M inbound optical signals comprises a 100 gigabit per second optical data signal with non-return to zero (NRZ) modulation.

17. The pluggable optical host and network I/O optoelectronic module of claim 16 , wherein:

the first signal processing circuitry includes:

N network-side post amplifiers communicatively coupled to the N network-side optical receivers;

a first clock and data recovery circuit (CDR) communicatively coupled to the N network-side post amplifiers; and

M host-side drivers communicatively coupled to the first CDR and to the M host-side optical transmitters; and

the second signal processing circuitry includes:

M host-side post amplifiers communicatively coupled to the M host-side optical receivers;

a second CDR communicatively coupled to the M host-side post amplifiers; and

N network-side drivers communicatively coupled to the second CDR and to the N network-side optical transmitters.

18. The pluggable optical host and network I/O optoelectronic module of claim 16 , further comprising:

a host-side receptacle configured to receive a 2×M multiple-fiber push-on/pull-off (MPO) multi-mode fiber (MMF) connector, wherein each of the M inbound optical signals is emitted through the 2×M MPO MMF connector onto a corresponding one of M inbound MMF optical fibers and each of the M outbound optical signals is received through the 2×M MPO MMF connector from a corresponding one of M outbound MMF optical fibers; and

a network-side receptacle configured to receive a 2×1 Little Connector (LC) connector, wherein the N inbound optical signals are received through the 2×1 LC connector from a first single-mode fiber (SMF) on which the N inbound optical signals are wavelength multiplexed and the N outbound optical signals are emitted through the 2×1 LC connector into a second SMF on which the N outbound optical signals are wavelength multiplexed.

19. The pluggable optical host and network I/O optoelectronic module of claim 16 , wherein N and M are each equal to 16.