Q100-DD-ZR-DCO– 100G OpenZR+ QSFP-DD Coherent Transceiver (C-Band)
The Q100-DD-ZR-DCO is a 100G OpenZR+ QSFP-DD coherent DCO transceiver designed for metro and regional DWDM networks requiring compact form factor, flexible wavelength tuning, and robust optical performance. The module uses DP-QPSK coherent modulation and supports flex-grid DWDM operation across the full C-band, enabling efficient 100G transport over distances of up to 100 km on single-mode fiber.
Built on polarization-diverse coherent detection and advanced digital signal processing, the transceiver supports electronic chromatic dispersion compensation and strong tolerance to common optical impairments such as PMD, PDL, and SOP variations. It is fully compliant with OpenZR+ architecture, QSFP-DD MSA, and CMIS 5.0, ensuring interoperability with modern routers, switches, and open line systems.
The module is managed through a standard I²C / CMIS interface and supports CAUI-4 on the client side, making it suitable for compact 100G coherent deployments where power efficiency, wavelength flexibility, and operational simplicity are key requirements.
Key Features
• 100G OpenZR+ coherent QSFP-DD transceiver
• DP-QPSK coherent modulation on the line side
• Full C-band DWDM tunability (191.3–196.1 THz)
• Flex-grid DWDM support
• Client-side interface: CAUI-4
• Electronic chromatic dispersion compensation
• Polarization-diverse coherent detection
• CMIS 5.0 compliant management interface
• QSFP-DD Type 2 form factor with 76-pin connector
• Single 3.3 V power supply
• RoHS compliant
General Specifications
• Form factor: QSFP-DD pluggable
• Data rate: 103.1 Gb/s
• Modulation format: DP-QPSK
• Optical reach: up to 100 km over SMF
• Operating case temperature: 0 °C to +70 °C
• Storage temperature: -40 °C to +85 °C
• Power supply voltage: 3.135 to 3.465 V
Optical Transmitter Specifications
• Frequency range: 191.3 to 196.1 THz (C-band)
• ITU grid: 75 GHz spacing
• Laser frequency accuracy: ±1.5 GHz
• Laser frequency stability: ±1.5 GHz
• Fine tuning range: ±6 GHz
• Fine tuning resolution: 100 MHz
• Channel tuning time: = 60 s
• Output power: -7 dBm (typical)
• Output power stability: ±1 dB
• Output power accuracy: ±2 dB
• In-band OSNR: = 34 dB / 0.1 nm
• Laser linewidth: kHz range
• Transmitter back reflectance: = -24 dB
• Transmitter off power: = -20 dBm
Optical Receiver Specifications
• Input power range: -18 to 0 dBm
• Receiver sensitivity: -32 dBm (post-FEC BER < 1E-15)
• OSNR sensitivity: 12.5 dB / 0.1 nm
• LOS assert: -27 to -25 dBm
• LOS hysteresis: 1.0 to 2.5 dB
• Chromatic dispersion tolerance: up to 20,000 ps/nm
• Differential group delay (DGD) tolerance: 10 ps
• Peak PDL tolerance: 3.5 dB
• SOP change tolerance: up to 50 rad/ms
• Optical return loss: 20 dB
Electrical Interface
• Host interface: CAUI-4
• Lane count: 4
• Lane signaling rate: 25.78125 GBd ±100 ppm
• Modulation (host side): NRZ
• Differential input voltage tolerance: up to 900 mVpp
Power and Consumption
• Typical power dissipation: 16.5 W
• Low-power mode consumption: 1.5 W
• Inrush current: 100 mA/µs
• Power supply noise tolerance: 25 mV
Management and Control
• Management interface: I²C (Two-Wire Interface)
• CMIS compliant (v5.0)
• Supported control signals: ModSelL, ResetL, LPMode, ModPrsL, IntL
• Supports host and network loopback functions
Compliance and Safety
• QSFP-DD MSA compliant
• OpenZR+ architecture
• OIF Coherent CMIS compliant
• Laser safety: Class 1 (IEC 60825-1)
• EMC/EMI: FCC Class B
• ESD: up to 8 kV contact, 15 kV air
• RoHS compliant
Typical Applications
• 100G OpenZR+ metro DWDM networks
• Regional coherent transport
• Router-based coherent DWDM (IPoDWDM)
• Compact and power-efficient 100G line interfaces