100G QSFP28 DCO DWDM C-Band LC Duplex SMF
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100G QSFP28 DCO DWDM C-Band Coherent Transceiver
Model: QSP-100COTU
Form Factor: QSFP28 (Digital Coherent Optics)
Connector: LC Duplex | Fiber Type: OS2 Single-Mode Fiber
🔹 Features
Fully compliant QSFP28 Digital Coherent Optics (DCO) module
Full C-Band tunable operation (grid-less, ITU-T G.694.1 DWDM)
Supports 100GE and OTU4 client interfaces with integrated framer and monitoring
DP-QPSK / DQPSK modulation for coherent transmission
Hot-pluggable QSFP28 form factor — compatible with existing 100G QSFP28 ports
Unamplified transmission distance: up to 120 km
Single +3.3 V power supply
Metal housing for low EMI and robust performance
Operating case temperature:
Standard (ST): −5 °C to +70 °C
Industrial (IT): −40 °C to +85 °C
Maximum power consumption: 13 W (ST) / 15 W (IT)
RoHS-6 compliant
Laser Safety: Class I per FDA/CDRH and IEC 60825
🔹 Applications
Metro and long-haul DWDM coherent links
Wireless mid-haul / back-haul networks
Access and aggregation backhaul networks
100 G unamplified transmission up to 120 km
Data Center Interconnect (DCI) and metro transport systems
🔹 Transmitter Optical Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Notes |
|---|---|---|---|---|---|---|
| Data Rate | – | – | – | 128 | Gb/s | Line rate |
| Side-Mode Suppression Ratio | SMSR | 40 | – | – | dB | – |
| Transmit Output Power | PT | −8 | – | −5 | dBm | Average |
| Tx Power Monitor Accuracy | – | −2 | – | +2 | dB | – |
| Tx Power Imbalance (X-Pol / Y-Pol) | Px/y | – | – | 2 | dB | – |
| Tx XY Skew | LW | – | – | 3 | ps | – |
| Tx IQ Offset | – | – | – | −24 | dB | – |
| Tx IQ Imbalance | – | – | – | 1 | dB | – |
| Tx Quadrature Error | – | −5 | – | +5 | ° | – |
| Tx IQ Skew | – | – | – | 2 | ps | – |
| Tx EVM Mask Ratio | EVM | – | – | 18 | % | – |
| In-band OSNR | OSNRin | 40 | – | – | dB/0.1 nm | – |
| Tx Reflectance | – | – | – | −22 | dB | – |
🔹 Receiver Optical Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Notes |
|---|---|---|---|---|---|---|
| Input Power Range | Pin | −40 | – | +5 | dBm | Unamplified |
| Average Sensitivity | Rsen | – | – | −32 | dBm | – |
| Chromatic Dispersion Tolerance | – | – | – | 10 | ns/nm | 0 |
| PMD Tolerance (DGD) | – | – | – | 16 | ps | 1 |
| PDL (2 dB) OSNR Penalty | – | – | – | 1 | dB | – |
| Input Power Transient Amplitude | – | −3 | – | +3 | dB | – |
| SOP Tracking ( < 0.5 dB OSNR Penalty ) | – | – | – | 100 | kHz | – |
| Rx Reflectance | – | – | – | −22 | dB | – |
| LOS Assert | LOS A | −40 | – | – | dBm | – |
| LOS De-assert | LOS De | – | – | −32 | dBm | – |
| LOS Hysteresis | – | – | – | 5 | dB | – |
| OSNR Requirement (Metro) | OSNRmin | 16.5 | – | – | dB/0.1 nm | 2 |
| OSNR Requirement (Long-Haul) | OSNRmin | 15 | – | – | dB/0.1 nm | 3 |