APD20 Fiber-Coupled APD Amplified Photodetector (400-1700nm, 10M-400M)
APD20 series APD photodetector module, can detect near infrared light in the region of 400-1700nm with fiber coupling input, bandwidth from 10M to 400M. suitable for detecting nW level of optical power.
Huang
Email: Hqy@ybphotonics.com
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Product Introduction
The APD20 series Fiber-Coupled APD Amplified Photodetector is a high-performance optical detection hardware module, supporting 400-1700nm broad wavelength detection with a fiber-coupled input design and a configurable bandwidth of 10MHz to 400MHz. It features ultra-high sensitivity for nW-level optical power detection, integrated M-factor temperature compensation, and compatibility with both single-mode (SM) and multimode (MM) fibers, ideal for weak light signal detection and distributed fiber optic sensing systems.
Core Features
- 400-1700nm Broad Wavelength Range
Dual material options (Si/InGaAs) for visible to near-infrared light detection - 10M-400M Configurable Bandwidth
Multiple bandwidth models available, matching different detection scenario requirements - Ultra-High Weak Light Sensitivity
Detects nW-level optical power with low NEP for high-precision signal capture - M-Factor Temperature Compensation
Ensures stable performance under temperature changes, high detection reliability - Dual Fiber Compatibility
Works with single-mode (SM) and multimode (MM) fibers, flexible for system integration - Standardized Interface Design
FC/APC optical input, SMA female electrical output, 50Ω impedance for easy wiring - Low Power Consumption
9-12V DC operating voltage, <200mA current, suitable for embedded and portable systems
Applications
- Ultra-weak optical signal detection and acquisition
- Distributed Fiber Optic Sensing
- Laser beat frequency signal detection and analysis
- Optical communication signal reception and detection
- Scientific research & laboratory optical detection experiments
- Industrial optical sensing and non-contact detection equipment
Technical Specifications
APD20A Series (Si, 400-1000nm, Multimode Fiber)
| Items | APD20A-10M | APD20A-50M | APD20A-200M | APD20A-400M |
|---|---|---|---|---|
| Material | Si | Si | Si | Si |
| Wavelength Range | 400-1000nm | 400-1000nm | 400-1000nm | 400-1000nm |
| Optical Input Connector | FC/APC (Multimode) | FC/APC (Multimode) | FC/APC (Multimode) | FC/APC (Multimode) |
| Responsivity (@M=1) | 0.5A/W @850nm | 0.5A/W @850nm | 0.5A/W @850nm | 0.5A/W @850nm |
| Bandwidth (b) | DC-10MHz | DC-50MHz | DC-200MHz | DC-400MHz |
| Rise Time (b) | 40ns | 8ns | 2ns | 1ns |
| Gain (a) | 1.4×10⁷V/W | 2.7×10⁶V/W | 1.2×10⁶V/W | 0.52×10⁶V/W |
| Saturated Optical Power | 0.23μW | 1.3μW | 2.5μW | 5.8μW |
| Noise Voltage (b) | 18mVpp | 18mVpp | 18mVpp | 18mVpp |
| NEP | 0.11pW/√Hz | 0.23pW/√Hz | 0.28pW/√Hz | 0.64pW/√Hz |
APD20C Series (InGaAs, 1000-1700nm, Single-Mode Fiber)
| Items | APD20C-10M | APD20C-50M | APD20C-200M | APD20C-400M |
|---|---|---|---|---|
| Material | InGaAs | InGaAs | InGaAs | InGaAs |
| Wavelength Range | 1000-1700nm | 1000-1700nm | 1000-1700nm | 1000-1700nm |
| Optical Input Connector | FC/APC (Single-Mode) | FC/APC (Single-Mode) | FC/APC (Single-Mode) | FC/APC (Single-Mode) |
| Responsivity (@M=1) | 0.9A/W @1550nm | 0.9A/W @1550nm | 0.9A/W @1550nm | 0.9A/W @1550nm |
| Bandwidth (b) | DC-10MHz | DC-50MHz | DC-200MHz | DC-400MHz |
| Rise Time (b) | 40ns | 8ns | 2ns | 1ns |
| Gain (a) | 3.2×10⁶V/W | 0.65×10⁶V/W | 4.0×10⁵V/W | 1.8×10⁵V/W |
| Saturated Optical Power | 0.98μW | 4.8μW | 8μW | 16.7μW |
| Noise Voltage (b) | 18mVpp | 18mVpp | 18mVpp | 18mVpp |
| NEP | 0.42pW/√Hz | 0.71pW/√Hz | 0.84pW/√Hz | 1.8pW/√Hz |
Common Parameters (All APD20 Models)
| Params | Specification |
|---|---|
| Maximum Output Amplitude (a) | 3.2V |
| Operating Voltage | DC 9-12V |
| Operating Current | ＜200mA |
| Output Impedance | 50Ω |
| Output Coupling Mode | DC |
| Electrical Output Connector | SMA Female |
| Operating Temperature | -10~65℃ |
| Storage Temperature | -40~85℃ |
Remarks:
a：For high resistance loads
b：For 50Ω loads
Mechanical dimensions
1. Response curve
Note: Response curves are typical values for reference only.
Screenshot of test data
APD20-200M, screenshot of oscilloscope without optical bottom noise, peak-to-peak value 6.5mV
Measured data graph as an optoelectronic conversion module in a distributed fiber optic vibration DVS system
FAQ
-
Q：Do you have an unboxing picture of the photodetector?
A：When you buy our photodetectors, we will deliver SMA to BNC RF cable, and power supply for free. -
Q: What are the advantages of your photodetectors compared to Thorlabs?
A: We support custom development and we offer better prices. -
Q: What is the lead time for photodetector modules?
A: Basically, we have more than 90% of detectors in stock, only a few models need 3 weeks lead time. -
Q: Do you support the sale of those countries, and is the shipping included?
A: Our service is available worldwide, regardless of country or region. Shipping is included. -
Q: Who are your typical customers?
A: More than 100 top universities and research institutes in China have chosen us and given us high evaluations, such as: Chinese Academy of Sciences, CEC, Tsinghua University, Peking University and other clients.
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