BPD-003 OEM Balanced Photodetector
Small, low-noise, DC-coupled balanced photodetector module for OEM integration with up to 230 MHz bandwidth.
- Operating Wavelength
- 1060, 1310, or 1550 ± 50 nm
- Photodetector Type
- InGaAs
- PD Responsivity
- > 0.8 mA/mW at 1550 nm; > 0.7 mA/mW at 1310 nm; > 0.5 mA/mW at 1060 nm
- Polarization Dependent Loss (PDL)
- < 0.2 dB
Overview
The Luna BPD-003 is a compact, DC-coupled balanced photodetector designed for integration into OEM systems. It combines an optical head with a post-amplification board and an SMB RF output connector, packaged in a small, lightweight shielding box.
The optical head consists of two input fibers aligned with a pair of balanced InGaAs photodetectors. An integrated low-noise transimpedance amplifier (TIA) is placed immediately after the photodetectors to amplify the received signals with low noise and enhanced common mode rejection. The post-amplification circuit further conditions and amplifies the output signal to a range of ±3.5 V.
The module is available for 1060 nm, 1310 nm or 1550 nm operation and provides a 3 dB RF bandwidth of DC to 230 MHz with a transimpedance gain of 50 × 10³ V/A. Other bandwidths and gains may be available. It is intended for larger systems such as optical coherence tomography (OCT), fiber optic sensing interrogators and optical measurement instrumentation where balanced detection is used to raise the system signal-to-noise ratio.
Power is supplied at ±5 V through a 6-pin connector header; the RF signal is output on a 50 Ω SMB connector.
Key Features
- Low noise
- High CMRR
- High conversion gain
- Wide bandwidth ~ 230 MHz
- Compact design
- DC coupled
- Integrated low-noise transimpedance amplifier (TIA)
- Packaged in a small, lightweight shielding box
- Available for 1060 nm, 1310 nm or 1550 nm
Specifications
| Operating Wavelength | 1060, 1310, or 1550 ± 50 nm |
|---|---|
| Photodetector Type | InGaAs |
| PD Responsivity |
> 0.8 mA/mW at 1550 nm; > 0.7 mA/mW at 1310 nm; > 0.5 mA/mW at 1060 nm
Includes the coupling loss of fiber to photodiode
|
| Polarization Dependent Loss (PDL) | < 0.2 dB |
| Return Loss (RL) | > 45 dB |
| Maximum Input Power | 10 mW |
| Pigtail Length | 100 cm ± 10 cm |
| Fiber Type | SMF-28 for 1310 or 1550 nm; Hi1060 for 1060 nm |
| RF Output Bandwidth (3 dB) |
DC to 230 MHz
Tolerance = 20%. Other bandwidths may be available
|
|---|---|
| Transimpedance Gain (at 50 Ω) |
50 × 10³ V/A (TIA + post amplifier)
Other gains are available
|
| Conversion Gain (at 50 Ω) |
> 40 × 10³ mV/mW at 1550 nm; > 35 × 10³ mV/mW at 1310 nm; > 25 × 10³ mV/mW at 1060 nm
Other gains are available
|
| CW Balanced Saturation Power |
36 µW at 1550 nm; 42 µW at 1310 nm; 58 µW at 1060 nm
For other transimpedance gains and wavelengths, CW Saturation Power is specified by (3.5V/Transimpedance gain) x Responsivity
|
| Common Mode Rejection Ratio (CMRR) |
> 35 dB (DC to 40 MHz); > 15 dB (40 to 230 MHz)
Web page states > 15 dB (40 to 200MHz); datasheet value used
|
| NEP (DC - 100 MHz) | < 6 pW/√Hz |
| RF Output Impedance | 50 Ω |
| RF Output Voltage (Linear Range) | ±1.75 V at 50 Ω load; ±3.5 V at high impedance load |
| RF Output Connector | SMB |
| Power Supply | ±5 V/200 mA |
|---|---|
| Power Supply Input Connector | 6-pin connector header with 0.08” pitch or 7-pin SATA connector |
| Operating Temperature | 10 to 50 °C |
|---|---|
| Storage Temperature | -40 to 85 °C |
| Dimensions (L x W x H) |
1.95 x 0.85 x 0.65 in
Values are referenced without connectors
|
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Optical coherence tomography (OCT)
- OEM modules for fiber optic sensing
- Fiber sensing interrogator
- Optical imaging
- Instrumentation
- Research and development
Options & Accessories
| Option | Description |
|---|---|
| BPD-003-230-15-FC/APC | OEM balanced photodetector, 230 MHz, FC/APC, 1550 nm — OEM balanced photodetector with RF output, 230 MHz bandwidth (typical), FC/APC connectors, 1550nm. |
| BPD-003-230-13-FC/APC | OEM balanced photodetector, 230 MHz, FC/APC, 1310 nm — OEM balanced photodetector with RF output, 230 MHz bandwidth (typical), FC/APC connectors, 1310nm. |
| BPD-003-230-10-FC/APC | OEM balanced photodetector, 230 MHz, FC/APC, 1060 nm — OEM balanced photodetector with RF output, 230 MHz bandwidth (typical), FC/APC connectors, 1060nm. |
Documents & Resources
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