2.5Gbps Compact SFP Dual BIDI Transceiver Tx 1310nm Rx 1550nm LC 20km DOM
2.5Gbps CSFP Dual BIDI Transceiver TX1550nm RX1310nm LC 20km DOM
Description
The GCS-B5325-B5325-20C is a compact small form-factor pluggable CSFP transceiver is specifically designed for the high performance integrated two bi-directional links on a duplex single-mode fiber.
It is with two 1.25Gbps BOSA in a SFP package, for each lane, it features with a top quality 1550nm DFB laser transmitter and a highly sensitive 1310nm PIN photodiode, a maximum transmission can reach up to 20km over single mode fiber.
It is with the SFP 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C interface as specified in the MSA SFF-8472.
The transceiver is fully compatible with Compact SFP Multi-Source Agreement (MSA) and CE/RoHS certificated.
Specifications
| Product Category | 2.5G Compact SFP | P/N | GCS-B5325-B5325-20C |
| Packaging | CSFP | Type | 2 BOSA in one SFP port |
| Data-Speed (CH1/CH2)) | 2.488G/2.488G | Lane Count | 2x ( Tx/Rx ) |
| Link Length | 20km | Interface | Dual LC |
| TX Center Wavelength | 2x 1310nm | RX Center Wavelength | 2x 1550nm |
| Power Supply Voltage | +3.3V (typical) | Power Consumption | ≤ 1.8W |
| LD Type | DFB laser | PD Type | PIN Photodiode |
| Transmitter Power | -5 ~ 0dBm | Receiver Sensitivity | < -19dBm |
| Extinction Ratio | > 8.2dB | Overload | > 0dBm |
| Power Budget (dB) | 14dB | DOM/DDM | support |
| Environment | Operating: 0 to 70°C | Warranty | 36-month |
| Storage: -40°C to 85°C | Weight | 30gram | |
| Compliance | Gigabit Ethernet, MSA Compliant | ||
Features
- Dual Fiber Bi-Directional CSFP Optical Transceiver
- Supports 2.488Gbps Bi-directional Data Links
- 2xBi-directional transceivers in 1 SFP transceiver package
- Compliant with CSFP MSA 2.0 (Option2)
- Compliant with Digital Diagnostic Monitor Interface SFF-8472
- Duplex LC Connector
- 1550nm DFB laser and 1310nm PIN photodetector
- Up to 20km on 9/125µm SMF
- Single +3.3 V Power Supply
- RoHS Compliant
- Class 1 Laser International Safety Standard IEC 60825 Compliant
Application
- SDH STM-16 and SONET OC-48 system
- Fiber Channel
- Switch to Switch interface
- Point to Point FTTH Application
- Other optical transmission systems
Electrical and Optical Characteristics
| Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
| Transmitter | ||||||||
| Centre Wavelength | λc | 1530 | 1550 | 1570 | nm | |||
| Spectral Width (-20dB) | σ | 1 | nm | |||||
| Side Mode Suppression Ratio | SMSR | 30 | dB | |||||
| Average Output Power | Pout | -5 | 0 | dBm | 1 | |||
| Extinction Ratio | ER | 8.2 | dB | |||||
| Optical Rise/Fall Time (20%~80%) | tr/tf | 0.16 | ns | |||||
| Data Input Swing Differential | VIN | 400 | 1800 | mV | 2 | |||
| Input Differential Impedance | ZIN | 90 | 100 | 110 | Ω | |||
|
TX Disable |
Disable | 2.0 | Vcc | V | ||||
| Enable | 0 | 0.8 | V | |||||
|
TX Fault |
Fault | 2.0 | Vcc | V | ||||
| Normal | 0 | 0.8 | V | |||||
| Receiver | ||||||||
| Centre Wavelength | λc | 1290 | 1330 | nm | ||||
| Receiver Sensitivity | -19 | dBm | 3 | |||||
| Receiver Overload | 0 | dBm | 3 | |||||
| LOS De-Assert | LOSD | -19 | dBm | |||||
| LOS Assert | LOSA | -30 | dBm | |||||
| LOS Hysteresis | 1 | 4 | dB | |||||
| Data Output Swing Differential | Vout | 400 | 1800 | mV | 4 | |||
|
LOS |
High | 2.0 | Vcc | V | ||||
| Low | 0.8 | V | ||||||
Notes:
1. The optical power is launched into SMF.
2. PECL input, internally AC-coupled and terminated.
3. Measured with a PRBS 223-1 test pattern @2488Mbps, BER ≤1×10-12.
4. Internally AC-coupled.
Digital Diagnostic Memory Map
The transceivers provide serial ID memory contents and diagnostic information about the present operating conditions by the 2-wire serial interface (SCL, SDA).
The diagnostic information with internal calibration or external calibration all are implemented, including received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring.
The digital diagnostic memory map specific data field defines as following.A0h/A2h for Channel1 B0h/B2h for Channel2
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