LUNA BPD-003 OEM Balanced Photodetector Instructions
- June 15, 2024
- Luna
Table of Contents
BPD-003
OEM Balanced Photodetector
Instruction Note
Section 1. Specifications:
Photodetector:|
---|---
Operating Wavelengths| 1060, 1310 or 1550±50 nm
Photodetector Type| InGaAs
PD Responsivity1| > 0.8 mA/mW at 1550 nm
0.7 mA/mW at 1310 nm
0.5 mA/mW at 1060 nm
PDL| < 0.2 dB
Return Loss| > 45 dB
Maximum Input Power| 10 mW
RF Output:|
RF Output Bandwidth (3dB)2,3| DC to 230 MHz
Transimpedance Gain (at 50Ω)4| 50 × 103 V/A
( TIA + post amplifier)
Conversion Gain (at 50Ω)3| > 40 × 103 mV / mW at 1550nm
35 × 103 mV / mW at 1310nm
25 × 103 mV / mW at 1060nm
CW Balanced Saturation Power5| 36 μW at 1550 nm
42 μW at 1310 nm
58 μW at 1060 nm
Common Mode Rejection Ratio| > 35 dB (DC to 40MHz)
15 dB (40 to 230MHz)
NEP (DC to100 MHz)| < 6 pW/√Hz
RF Output Voltage (Linear Range)| ±1.75V at 50Ω load
±3.5V at high impedance load
RF Output Impedance| 50 Ω
RF Output Connector| SMB
Power Supply Input Connector| 6 – pin connector header with 0.08” pitch or 7 – pin SATA connector
Power Supply| ±5 V/200 mA
General:|
Fiber type| SMF-28 for 1310 or 1550 nm HI1060 for 1060 nm
Pigtail Length| 100 cm ± 10 cm
Operating Temperature| 10 to 50 oC
Storage Temperature| −40 oC to 85 oC
Dimensions| 1.95” (L) × 0.85” (W) × 0.65” (H)
Notes: Values are referenced without connectors.
- Includes the coupling loss of fiber to photodiode.
- Tolerance =20%.
- Other bandwidths may be available.
- Other gains are available.
- For other transimpedance gains and wavelengths, CW Saturation Power is specified by (3.5V/Transimpedance gain) x Responsivity.
Section 2. Overview:
OCT and sensor systems require high-performance balanced photodetectors to
boost system signal-to-noise ratio. The BPD-003 is specially designed for OEM
applications in such fields, engineered for low cost and small size as well as
high performance. The device consists of an optical head and a post-
amplification board with an SMA or SMB RF output. The optical head has two
input fibers aligned with a pair of balanced photodetectors, followed by an
integrated ultra-low noise transimpedance amplifier (TIA) placed immediately
after the photodetectors to amplify received signals with low noise and
enhanced CMRR. The post-amplification circuit further conditions and amplifies
the signal to a range of ±3.5 V maximum. With a bandwidth of up to 230 MHz and
a high conversion gain, the BPD-003 is ideal for integration into OCT, fiber
sensors, and highperformance optical measurement systems.
Section 3. Device Description:
3.1 General Description
The BPD-003 is a compact module packaged in a shielding box. Physical and
electrical features are described below.
3.1.1 Dimensions
Dimensions and mounting holes are shown in Figure 2.
Electrical and optical interfaces are shown in Figure 3.
Optical interface:
Input 1: upper pigtail
Input 2: lower pigtail
Electrical interfaces:
SMB connector CN3: RF signal output (50Ω)
6-pin connector CN1: power supply connector
6-pin connector CN2: not used electrically; can be used for physical support
Connector CN1 pinout:
| Pin # | Description |
|---|---|
| 1 | GND |
| 2 | +5V ±5% |
| 3 | GND |
| 4 | −5V ±5% |
| 5 | GND |
| 6 | NC |
(Can be reconfigured for signal output)
Connector CN2 pinout:
| Pin # | Description |
|---|---|
| 1 | GND |
| 2 | GND |
| 3 | GND |
| 4 | GND |
| 5 | GND |
| 6 | NC |
(Can be reconfigured for signal output)
CN1 and CN2:
Manufacturer: 3M
Part #: 951106-8622-AR
Mating connector for CN1 and CN2: Manufacturer: 3M
Part #: 950506-6102-AR
Section 4. Device Operation:
Electrical and optical connections are required during setup of the BPD-003.
Follow safety precautions when making these connections.
4.1. Getting Started
Unpacking
Be careful when unpacking the BPD-003 from its original packaging.
Avoid applying any force to optical fiber pigtails, and do not let any free-
drop of fiber connectors occur at any time. Excessive force to fiber pigtails
may degrade device performance or damage the variable optical delay module.
Observe standard electrical safety and antistatic precautions when handling
the BPD-003 and making electrical connections.
Operation
Follow the steps below to operate the BPD-003
- Connect the ±5V power supplies to 6-pin connector CN1.
- Connect RF output connector (SMB, 50Ω impedance).
- Connect optical inputs to the 2 input pigtails.
Section 5. Technical Support:
Luna Innovations is committed to high quality standards and customer
satisfaction. For any questions regarding the quality and use of the BPD-003,
or future suggestions, please contact Luna Innovations Inc. at (909)-590-5473,
or by e-mail at [email protected].
Luna Innovations will respond to all customer questions within 24-48 hours
during regular business hours.
November 13, 2023
Luna Innovations Inc.
14351 Pipeline Ave.
Chino, CA 91710 USA
Tel: 909-590-5473
Web: www.lunainc.com
Date: November 13, 2023
Document #: GP-IN-BPD-003-11