Description
Features of 25g BIDI 40km
- Supports 24.3Gbps to 26.5Gbps bit rates
- 1270nm DFB Laser and APD receiver for YSP28-B7140
- 1310nm DFB Laser and APD receiver for YSP28-B1740
- Up to 30km on 9/124µmSMF
- Up to 40km with FEC over SMF
- Simplex LC receptacle optical interface compliant
- Hot pluggable
- 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
Applications
- 5G fronthaul network (connecting baseband unit BBU and radio remote unit RRU);
- Tight fiber resources in the core area of urban districts or interconnection across buildings;
- Interconnection between cabinets within data centers.
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 | 1260 | 1270 | 1280 | nm | YSP28-B7140 |
| 1300 | 1310 | 1320 | nm | YSP28-B1740 | ||
| Spectral Width(-20dB) | Δλ | 1 | nm | |||
| Side Mode Suppression Ratio | SMSR | 30 | dB | |||
| Average Optical Power (avg.) | Pout | 0 | +6.0 | dBm | 1 | |
| Laser Off Power | Poff | – | – | -30 | dBm | |
| Extinction Ratio | ER | 3.5 | – | – | dB | 2 |
| Relative Intensity Noise | RIN | – | – | -130 | dB/Hz | |
| Transmitter and Dispersion Penalty | TDP | – | 2.7 | dB | ||
| Optical Return Loss Tolerance | – | – | 26 | dB | ||
| Output Optical Eye | Compliant with IEEE802.3cc eye masks when filtered | 2 | ||||
| Receiver Section | ||||||
| Receiver Center Wavelength | λc | 1300 | 1310 | 1320 | nm | YSP28-B7140 |
| 1260 | 1270 | 1280 | nm | YSP28-B1740 | ||
| Receiver in Average Power | -18 | -5 | dBm | |||
| Receiver sensitivity(OMA) | Sen | -18 | dBm | 3 | ||
| Los Assert | LOSA | -30 | – | – | dBm | |
| Los Dessert | LOSD | – | – | -19 | dBm | |
| Los Hysteresis | LOSH | 0.5 | – | 5 | dB | |
| Overload | Pin-max | – | – | -5 | dBm | 3 |
| Receiver Reflectance | – | – | -26 | dB | ||
| Receiver Power (damage) | – | – | -4 | dBm | ||
Notes:
- The optical power is launched into 9/125µm SMF.
- Measured with a PRBS 231-1test pattern @25.78Gbps.
- 3. Measured with a PRBS 231-1test pattern @78Gbps, ER=4dB, BER <10-6.
Timing Characteristics
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| TX_Disable Assert Time | t_off | 100 | us | ||
| TX_Disable Negate Time | t_on | 2 | ms | ||
| Time to Initialize | t_start_up | 300 | ms | ||
| Tx_Fault Assert | t_fault_on | 1 | ms | ||
| Tx_Fault Reset | t_reset | 10 | us | ||
| Rx_LOS Assert Delay | t_los_on | 100 | us | ||
| Rx_LOS Negate Delay | t_los_off | 100 | us | ||
| Clock Frequency | fSCL | 0 | 400 | kHz |
Ordering information
| Part Number | Product Description |
| SFP28-25G-BIDI-40-71 | TX 1270nm, RX 1310nm, 25.78Gbps, 40km with FEC, Bi-Directional Simplex LC SFP28 Transceiver, -5ºC ~ +70ºC, With DDM. |
| SFP28-25G-BIDI-40-71E | TX 1270nm, RX 1310nm, 25.78Gbps, 40km with FEC, Bi-Directional Simplex LC SFP28 Transceiver, -20ºC ~ +80ºC, With DDM. |
| SFP28-25G-BIDI-40-71T | TX 1270nm, RX 1310nm, 25.78Gbps, 40km with FEC, Bi-Directional Simplex LC SFP28 Transceiver, -40ºC ~ +85ºC, With DDM. |
| SFP28-25G-BIDI-40-17 | TX 1310nm, RX 1270nm, 25.78Gbps, 40km with FEC, Bi-Directional Simplex LC SFP28 Transceiver, -5ºC ~ +70ºC, With DDM. |
| SFP28-25G-BIDI-40-17E | TX 1310nm, RX 1270nm, 25.78Gbps, 40km with FEC, Bi-Directional Simplex LC SFP28 Transceiver, -20ºC ~ +80ºC, With DDM. |
| SFP28-25G-BIDI-40-17T | TX 1310nm, RX 1270nm, 25.78Gbps, 40km with FEC, Bi-Directional Simplex LC SFP28 Transceiver, -40ºC ~ +85ºC, With DDM. |




