Description
High speed and low noise balance photo detector consists of two matched ultra-low noise analog photodiodes, a low noise broadband transimpedance amplifier and ultra low noise power supply. Due to high gain, high sensitivity, high bandwidth, low noise, and high common mode rejection ratio, the high speed and low noise balance photo detector can effectively reduce the common mode noise, and improve the signal-to-noise ratio of the system.
Feature
- Low Noise (10mVpp Typical )
- High Bandwidth DC~350MHz
- High Transimpedance Gain 30KV/A
- Compact Structure 80*80*30mm
- Customizable Products
Applications
- Distributed Optical Fiber Sensing
- Doppler Wind Lidar
- OCT
- Spectrum Measurement
- Ns-level Optical Pulse Detection
| Item# | WBD-100M-A | WBD-350M-A | WBD-1000M-A | Unit |
| Detector Type | InGaAs | |||
| Operating Wavelength | 1100~1700 | 1100~1700 | 1100~1700 | nm |
| Bandwidth | DC~100 | DC~350 | 1000 | MHz |
| Typical Max Responsivity | 0.95@1550nm | 0.95@1550nm | 0.95@1550nm | A/W |
| Transimpedance Gain | 60K（30K） | 30K（60K） | 30K | V/A |
| Max. Input Power | 100 | 150 | 300 | uW |
| NEP | 5 | 5 | 9 | pW/Sqrt(Hz) |
| Output Impedance | 50 | 50 | 50 | Ω |
| CMRR | >25 | >25 | >25 | dB |
| Output Voltage Noise | 10 (Typical) | 10 (Typical) | 25 (Typical) | mVpp |
| Output Coupling Mode | DC/AC | DC/AC | AC | |
| Power Supply Voltage | 5 | 5 | 5 | V |
| Power Supply Current | 0.5(max) | 0.5(max) | 0.5(max) | A |
| Optical Inputs | FC/APC | FC/APC | FC/APC | |
| Electrical Outputs | SMA | SMA | SMA | |