QSFP28 100GbE O-Band DWDM

The Q100G-L40-DOxx is a high-performance 100G QSFP28 optical transceiver designed for O-Band nWDM transmission over single-mode fiber. It supports 8 nWDM wavelengths with 400 GHz channel spacing, enabling cost-effective multi-wavelength transport without the complexity of full C-band DWDM systems. The module is optimized for 100G multi-wavelength WDM links up to 40 km, making it well suited for metro access, aggregation networks, and point-to-point transport.

The transceiver converts four lanes of 25G NRZ electrical input into a single 100G PAM4 optical signal and performs the reverse operation on the receive side. It is fully compliant with QSFP28 MSA, IEEE 802.3bs, and 100G Lambda MSA, ensuring broad interoperability with modern switches and routers. A duplex LC optical interface and a single 3.3 V power supply make the module easy to deploy in high-density environments.

With a high-sensitivity APD receiver, integrated digital diagnostics, and support for commercial operating temperatures, the Q100G-L40-DOxx provides a robust and efficient solution for 100G O-Band WDM transmission where simplicity, reach, and operational stability are key.

• QSFP28 hot-pluggable form factor

• Supports 100G (106.25 Gb/s) using PAM4 modulation

• O-Band nWDM with 8 wavelengths and 400 GHz channel spacing

• Transmission distance up to 40 km over single-mode fiber

• High-sensitivity APD receiver

• Single 3.3 V power supply

• Power consumption up to 5.5 W

• Duplex LC optical connector

• I²C management interface with digital diagnostic monitoring

• RoHS-6 compliant

• Form factor: QSFP28

• Standards compliance: QSFP28 MSA, IEEE 802.3bs, 100G Lambda MSA

• Data rate: 106.25 Gb/s

• Modulation format: PAM4

• Fiber type: Single-mode (SMF)

• Reach: Up to 40 km

• Operating case temperature: -5 °C to +80 °C

• Wavelengths (nWDM O-Band): 1295.56 nm to 1311.43 nm (8 channels)

• Side-mode suppression ratio (SMSR): 30 dB

• Average launch power: 1.7 to 7.1 dBm

• Extinction ratio: 5.0 dB

• Optical return loss tolerance: 15.6 dB

• Transmitter reflectance: -26 dB

• Receiver type: APD

• Average receive power: -15.7 to -3 dBm

• Receive power (OMA outer): -2.6 dBm

• Receiver sensitivity (OMA outer): max -13.5 dBm (TECQ -14.9 dB)

• Receiver reflectance: -26 dB

• Damage threshold: -2.4 dBm

• Electrical lanes: 4 × 25G NRZ

• Signaling rate per lane: 25.78125 Gb/s ±100 ppm

• Supply voltage: 3.135 to 3.465 V (typ. 3.3 V)

• Interface: I²C (SFF-8636)

• Integrated digital diagnostic monitoring (DDM)

• Monitors: temperature, voltage, TX power, RX power, bias current

• Laser class: Class 1 (EN 60825-1)

• ESD protection: up to 1 kV (data pins), 2 kV (other pins)

• RoHS compliant

• 100G multi-wavelength O-Band WDM networks

• 40 km single-mode fiber transmission

• Metro access and aggregation links

• Cost-efficient 100G transport without C-band DWDM