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Description
CWDM Transceiver Features
- Supports 24.3Gbps to 26.5Gbps bit rates
- CWDM DFB Laser and PIN photo-detector
- Up to 10kmon 9/125µm SMF
- Duplex LC receptacle optical interface compliant
- Hot pluggable SFP28 transceiver
- All-metal housing for superior EMI performance
- RoHS6 compliant (lead free)
- Operating case temperature: Commercial: -5ºC to +70°C; Extended: -20ºC to +80°C; Industrial: -40ºC to +85°C
25G CWDM Application
- 5G front-haul network;
- Interconnection of data centers and parks with strained optical fiber resources;
- Metropolitan area access and aggregation.
Standards
- Compliant with INF-8431
- Compliant with SFF-8472
- Compatible with IEEE802.3cc
Optical Parameters
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section | ||||||
| Centre Wavelength | λc | λc-6.5 | λc | λc+6.5 | nm | |
| Spectral Width(-20dB) | Δλ | 1 | nm | |||
| Side Mode Suppression Ratio | SMSR | 30 | dB | |||
| Average Optical Power (avg.) | Pout | -3 | +6.0 | dBm | 1 | |
| Laser Off Power | Poff | – | – | -30 | dBm | |
| Extinction Ratio | ER | 3 | – | – | dB | 2 |
| Relative Intensity Noise | RIN | – | – | -130 | dB/Hz | |
| Optical Return Loss Tolerance | – | – | 26 | dB | ||
| Output Optical Eye | Compliant with IEEE802.3cc eye masks when filtered | 2 | ||||
| Receiver Section | ||||||
| Receiver Center Wavelength | λc | 1260 | 1620 | nm | ||
| Receiver in Average Power | -14 | 2 | dBm | |||
| Receiver Sensitivity | Sen | -14 | dBm | 3 | ||
| Los Assert | LOSA | -26 | – | – | dBm | |
| Los Dessert | LOSD | – | – | -17 | dBm | |
| Los Hysteresis | LOSH | 0.5 | – | 5 | dB | |
| Overload | Pin-max | – | – | 2 | dBm | 3 |
| Receiver Reflectance | – | – | -26 | dB | ||
| Receiver Power (damage) | – | – | 3 | dBm | ||
Notes:
- The optical power is launched into 9/125µm SMF.
- Measured with a PRBS 231-1test pattern @25.78Gbps.
- Measured with a PRBS 231-1test pattern @25.78Gbps, ER=4 dB, BER <10–6.
Mechanical Dimension
Ordering Information
| Part Number | Product Description |
| SFP28-25G-CWDM-XX-10 | CWDM-XX, 25Gbps, 10km, Duplex LC SFP28 Transceiver, -5ºC ~ +70ºC, With DDM. |
| SFP28-25G-CWDM-XX-10E | CWDM-XX, 25Gbps, 10km, Duplex LC SFP28 Transceiver, -20ºC ~ +80ºC, With DDM. |
| SFP28-25G-CWDM-XX-10T | CWDM-XX, 25Gbps, 10km, Duplex LC SFP28 Transceiver, -40ºC ~ +85ºC, With DDM. |
CWDM Wavelength and Clasp Color
| Wavelength | xx | Clasp Color Code | Wavelength | xx | Clasp Color Code |
| 1271nm | 27 | Gray | 1331nm | 33 | Green |
| 1291nm | 29 | Violet | 1351nm | 35 | Yellow |
| 1311nm | 31 | Blue | 1371nm | 37 | Orange |
SFP28 Module Details
The SFP28 module uses original imported chips and advanced plug-in electroplating process, resulting in lower power consumption, more stable signal transmission, and faster speed.
The sophisticated optical port, rational circuit layout and high-quality laser transceiver, ensure more stable signal transmission and eliminating data loss.
Plug and play ensures stable contact even after repeated insertion and removal, preventing poor contact and improving performance.
