Box Optronics is a professional manufacturer and supplier of 840nm 20mW SLED broadband light sources. With wideband spectrum control and high-stability output technology, we provide global clients with customized fiber selection and modular integration solutions, supporting detection applications in medical imaging and fiber sensing scenarios.
1. Introduction of the 840nm 20mW SLED Broadband Light Source
2. Technical Specifications
3. Product Features
4. Typical Applications
5. Standard Accessories
6. Safe Operation Guide
7. Ordering Information
8. Datasheet and testsheet
9. Terms of quote and payment
10. Lead time
11. Operation Notes and Maintenance
12. Quality Assurance and After-Sales Service
Product Introduction
This is an 840nm 20mW SLED broadband light source adopting superluminescent diode technology, with output power over 20mW, -3dB bandwidth over 45nm, flat spectrum, low ripple and excellent long-term stability. It supports benchtop and modular configurations with communication interface and monitoring software for industrial and medical integration. Suitable for industrial OCT, fiber sensing, and medical imaging. Please use with rated voltage, control temperature and humidity, ensure good heat dissipation, avoid output overload and contamination.
Product Specifications
Parameters
Unit
Values
Notes
Operating wavelength
nm
840
±20
Output power
mW
Min.20
840nm
-3dB Bandwidth
nm
Min.45 / Typ.48
Short-term stability
dB
≤±0.02/15 min
Long-term stability
dB
≤±0.05/8 hours
Optical isolator
dB
Without
Module
Pigtail fiber
-
CS780
FC/APC
Communication interface
-
Touch screen/DB9 Female(RS485)
Benchtop
-
DB9 Female(RS485)
Module
Power supply
-
AC 110~240V, <30W
Benchtop
-
5VDC or 12VDC, <15W
Module
Dimensions
mm
195(W)×220(D)×120(H)
Benchtop
mm
70(W)×90(D)×18(H)
Module
Operating temperature
℃
-5 ~ +55
Operating humidity
%
0~70%
Product Features
● Low spectral ripple;
● 20mW High output power;
● Module/benchtop dual configurations with communication monitoring for easy integration;
● Supports SM/PM fiber customization to fit various optical systems.
Product Applications
● Industrial OCT;
● Ophthalmic OCT;
● Fiber device calibration and passive component testing systems.
Step1. Unpacking: Before assembly, check whether all accessories are complete, including SLED light source module, USB data cable, green port cable, power adapter, test report, etc.
Step2. Power supply: Connected to a DC switching power supply or a regulated power supply that meets their power supply requirements. Use only the original matched power adapter (DC5V or DC12V). Improper power adapters may damage the light source. (Power adapter supplied according to local voltage standards.)
Step3. Connecting output fiber: Open the dust cap at the fiber connector or flange, check the fiber end face, and connect the fiber or splice the fiber to the device or power meter to be tested after confirming that there is no pollution and damage.
Setp4. Connect to the host computer: Use the Green Port Cable and the USB-RS485 DB9 Data Cable to connect the 840nm 20mW SLED broadband light source and the computer; the computer must first install a dedicated serial port driver to identify the USB-RS485 serial port data cable, otherwise the host computer software and the light source module cannot be correctly connected and communicated. Please ask Box Optronics for the driver.
Step5. Control software: Box Optronics provides the serial command or PC software to control the LD current and LD temperature of the 840nm 20mW SLED Broadband Light Source. Choose the correct port, set the current and temperature, then click the open button. (To prevent damage, ramp up the drive current slowly at initial operation. Do not apply full current immediately.)
Step6. After use, click the close button, turn off the power supply, and disconnect the fiber connection.
Ordering information
SLD Source
Wavelength
Output power
-3dB Bandwidth
Fiber type
Connector
Dimension
Voltage
BSLD
-XXX
-XX
-XX
XX
-XX
-X
(X)
SLD Laser source
840: 840nm
20: 20mW
5: 50nm
SM: CS780
FA: FC/APC
M: Module
B: Benchtop
Default: 5VDC
H: 12VDC
eg: BSLD-840-205SM-FA-M
(Order information: 840nm 20mW SLED Broadband Light Source, -3dB bandwidth around 50nnm, with SM CS 780 fiber, module package).
For other customized requirements, please contact: sales06@boxoptronics.com
If you have a DHL/ UPS/ FedEx account, Box Optronics suggest using the EXW. We ship via your account; we don't charge the shipping cost.
(2) DAP:
If you don't have an account, please prepay the shipping cost for the products.
● Terms of payment
PayPal and T/T are available.
Lead time
It takes around 10 working days for production. (If there are some in stock, it will be faster shipped.)
The international logistics might take 3-5 working days.
Operation Notes and Maintenance
● Avoid frequent plugging/ unplugging of fiber connectors to prevent dust accumulation and end-face damage.
● Clean fiber connectors with a lint-free wipe and inspect with a fiber end-face detector before connection. Always connect/disconnect fibers without power to avoid end-face burning. Cap unused connectors with dust caps.
● Store the equipment in a dry, moisture-free environment.
Quality Assurance and After-Sales Service
● Warranty Period:
Free repair or replacement for non-human-induced defects within 1 year from purchase. Paid maintenance services available after 1 year.
● Exclusions from Free Warranty:
During the free warranty period, free repair or replacement services will be provided for faults caused by product quality issues. However, Box Optronics retains the right to refuse free repair services in the following cases within the warranty period:
(1) Damage caused by natural factors (e.g., lightning, dust) or environmental influences.
(2) Malfunctions due to improper operation by the user.
(3) Obvious physical damage caused by human error.
(4) Unauthorized disassembly, modification, or repair.
(5) Altered or incomplete warranty labels on the housing.
(6) Damage or loss during transportation.
Hot Tags: China 840nm 20mW SLED Broadband Light Source Manufacturer, Supplier, Factory
Looking for competitive pricing on bulk orders? Send an inquiry to Box Optronics for high-performance DFB lasers, SLEDs, and PM fiber devices. Get a professional price quotation within 24 hours.
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