400G / 200G Coherent CFP2-DCO Transceiver – Up to 640 km / 2000 km
The CFP2-400G-DCO is a high-performance coherent CFP2-DCO optical transceiver designed for high-capacity DWDM transmission in DCI, metro and long-haul networks. The module supports transmission beyond 640 km at 400G and up to 2000 km at 200G over single-mode fiber.
The module supports both muxponder and transponder applications and integrates coherent DSP, OTN framing, SD-FEC and flexible host-side electrical interfaces. It is designed for direct integration into CFP2-DCO compatible transport equipment, routers and optical platforms.
Key Features
• CFP2-DCO coherent optical transceiver
• Supports 400G and 200G transmission
• Transmission reach: 400G: beyond 640 km, 200G: up to 2000 km
• DWDM coherent transmission over single-mode fiber
• Supports 75 GHz and 100 GHz channel spacing
• 400G modulation: PM-16QAM
• 200G modulation: PM-QPSK
• Integrated SD-FEC
• Integrated OTN Framer
• Supports muxponder and transponder applications
• Hot-pluggable 104-pin CFP2 electrical interface
• LC duplex optical connector
• Single 3.3 V DC power supply
• Typical power consumption: approximately 32 W
• Operating case temperature: 0°C to +75°C
• CFP2 MSA Hardware Specification Rev. 1.0 compliant
• CFP MSA Management Interface Specification Version 2.6 compliant.
Line-Side Performance
400G Mode
• Line rate: 400G
• Modulation: PM-16QAM
• Baud rate: 66 Gbaud
• Minimum grid spacing: 75 GHz
• FEC: SD-FEC
• FEC overhead: 15%
• BOL Rx OSNR requirement: approximately 21.5 dB
• Transmission reach: >640 km over SMF.
200G Mode
• Line rate: 200G
• Modulation: PM-QPSK
• Baud rate: 66 Gbaud
• Minimum grid spacing: 75 GHz
• FEC: SD-FEC
• FEC overhead: 21%
• BOL Rx OSNR requirement: approximately 14.5 dB
• Transmission reach: up to 2000 km over SMF
Supported Host Interfaces
The module supports multiple client-side formats, making it suitable for both native 400G transport and aggregation of multiple 100G services.
• 1 × 400GE
• 4 × 100GE
• 2 × 100GE
• 4 × OTU4
• 2 × OTU4
• 4 × 100G FlexO
• 2 × 100G FlexO
Supported electrical signaling includes:
• 400GAUI-8
• 100GAUI-4
• 100GAUI-2
• OTL4.4
• OTL4.2
• FOIC1.4
• FOIC1.2
• CEI-28G-MR
• CEI-56G-VSR.
Optical Transmitter Specifications
• Laser frequency range: 190.69375 to 196.65625 THz
• Frequency tuning grid: 6.25 GHz
• Laser frequency stability: ±1.5 GHz
• Optical output power range: -10 to +1 dBm
• Typical output power: +0.5 dBm
• Output power stability: ±0.3 dB
• Output power reporting accuracy: ±1 dB
• In-band transmitter OSNR: =37 dB/0.1 nm
• Transmitter optical return loss tolerance: 20 dB
• Polarization-dependent output power: maximum 1 dB
• Wavelength switching time: maximum 30 seconds
• Cold-start turn-up time: approximately 60–120 seconds
• TX-disabled optical output: maximum approximately -30 dBm.
Optical Receiver Specifications
• Receiver frequency range: 190.69375 to 196.65625 THz
• Optimum input power range: -14 to 0 dBm
• Typical optimum input level: approximately -8 dBm
• Extended input power range: -19 to +1 dBm
• Receiver sensitivity: -21 dBm
• Optical return loss: 20 dB
• BOL OSNR tolerance: 200G PM-QPSK: 13.9 dB typical / 14.5 dB max, 400G PM-16QAM: 20.7 dB typical / 21.5 dB max
• Chromatic dispersion tolerance: 200G PM-QPSK: -1,000 to +40,000 ps/nm, 400G PM-16QAM: -1,000 to +20,000 ps/nm
• PMD tolerance: 200G: 25 ps, 400G: 20 ps
• PDL tolerance: up to 6 dB
• Input power monitoring accuracy: ±1.5 dB from 0 to -18 dBm, ±2.5 dB from -18 to -25 dBm.
Electrical Specifications
• Supply voltage: Minimum: 3.2 V, Typical: 3.3 V, Maximum: 3.4 V
• Maximum steady-state current: 11.25 A
• High-speed electrical interface: CEI-56G-VSR-PAM4, CEI-28G-MR-NRZ
• Supports:
o FOIC1.2
o FOIC1.4
o OTL4.2
o OTL4.4
o 100GAUI-2
o 100GAUI-4
o 400GAUI-8
• High-speed data lines are internally AC-coupled.
Power Consumption
• Typical power consumption with framer enabled: 32 W
• Maximum with framer enabled: 36 W
• Typical power consumption with framer bypass: 29 W
• Maximum with framer bypass: 33 W
• Low-power mode: =2 W.
Management and Control
• MDIO management interface
• Module reset
• Transmitter disable
• Receiver loss-of-signal monitoring
• Global alarm
• Programmable alarms
• Programmable controls
• Low-power mode
• Module-present detection
• Firmware management
• Status reporting
• Internal thermal monitoring
• OTN overhead access via OHIO interface.
OTN and Framing
• Integrated OTN Framer
• Supports asynchronous muxponder mapping using GMP
• Supports synchronous transponder mapping using BMP
• Supports 100G FlexO
• Supports OTU4
• Supports 100GE
• Supports 400GE
• Configurable via MDIO.
Environmental Specifications
• Operating case temperature: 0°C to +75°C
• Short-term operating case temperature: up to +80°C
• Storage temperature: -40°C to +85°C
• Relative humidity: 15% to 85%, non-condensing.
Mechanical Specifications
• Form factor: CFP2-DCO
• Dimensions: 107.5 × 41.5 × 12.4 mm
• Host interface: 104-pin CFP2 connector
• Optical connector: Duplex LC
• Fiber type: Single-mode fiber
• Mechanically compliant with CFP2 HW Baseline Design Rev. 1L.
Regulatory Compliance
• UL 62368-1
• CAN/CSA C22.2 No. 62368-1
• EN 62368-1
• EN 60825-1
• EN 60825-2
• FDA 21 CFR 1040.10 / 1040.11
• EN 55032
• EN 55035
• EMC Directive 2014/30/EU
• EU RoHS 2011/65/EU
• EU 2015/863
• UK RoHS.
Typical Applications
• Data Center Interconnect – DCI
• Metro DWDM networks
• Regional transport networks
• Long-haul DWDM
• 400G coherent point-to-point links
• 200G ultra-long-haul transport
• Muxponder applications
• Transponder applications
• 4 × 100G to 400G aggregation
• Router and optical transport platform integration
Important interoperability note: The datasheet specifies a proprietary line framing format with proprietary SD-FEC. Both ends of the optical connection therefore need to use compatible technology for the specified coherent line configuration.