1550nm 3kHz Ultra-Narrow Linewidth Fiber Laser

Table of Contents

1. Introduction of the 1550nm 3kHz Ultra-Narrow Linewidth Fiber Laser

2. Technical Specifications

3. Product Features

4. Typical Applications

5. Product details

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 a 1550nm 3kHz Ultra-Narrow Linewidth Fiber Laser adopting erbium-doped fiber DFB laser cavity structure, with CW output power 50/100/200/500/1000mW optional, 3dB bandwidth less than 3kHz, wavelength stable without mode hopping. It supports benchtop and modular configurations with an RS232 communication interface and monitoring software for system integration. Suitable for distributed sensing and so on.

Product Specifications

Product Features

● Spectral linewidth ≤3 KHz;

● All-fiber DFB resonant cavity;

● Wavelength stable without mode hopping;

● DB9 Female(RS232) communications for easy integration.

Product Applications

● LiDAR;

● Acoustic sensors ,hydrophones;

● Fiber Optic Distributed Sensing.

Product Details

● Typical spectrum: 1550nm

● Typical Linewidth: 3dB spectral linewidth≤3 KHz (equal 20dB linewidth / 20)

● Packaging example

Operation Steps

1.Appearance:The module includes a power connector, power indicator, RS232 communication interface, output activation switch, and laser output fiber port.

2.Power Supply:The power port uses a standard DC5.5×2.1mm interface. Use only the original matched power adapter (DC5V or DC12V). Improper power adapters may damage the light source. A U-shaped connector power cable for connecting to a switch power supply is available upon request at the time of purchase.

3.Connecting the Fiber Optic Jumper:Remove the dust cap from the fiber connector, inspect the end face for contamination or damage, and ensure cleanliness before connecting to other fiber devices or test equipment. For high-power models, fusion splicing is recommended.

4.Connecting the Module to a Host Computer:Use the included USB-RS232 serial data cable to connect the module to the computer. Install the dedicated serial driver (provided by the manufacturer) to enable communication. Without the driver, the host software cannot connect to the module.

5.Software:The host software allows adjusting output power and controlling laser output via the "SoftActive" button. The software displays set pump current, output power, and temperature monitoring status.

6.Parameter Memory:Settings and status configured via the software are automatically saved in the module’s internal memory. No host computer connection is required if parameters do not need modification.

Ordering information

eg: NLFL-1550-50-T-SM-M

(Order information: 1550nm 3kHz Ultra-Narrow Linewidth Fiber Laser, 50mW output power, power adjustable, SM fiber, module package).

For other customized requirements, please contact: sales06@boxoptronics.com

Datasheet and Testsheet

Datasheet

Testsheet

Terms of quote and payment

● Terms of quote

(1) EXW:

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.

(3)Other

● Terms of payment

PayPal and T/T are available.

Lead time

It takes around 15 working days for production. (If there are some in stock, it will be faster shipped.)

The international logistics might take 3-5 working days.

1. Operation Notes and Maintenance-1550nm 3kHz Ultra-Narrow Linewidth Fiber Laser

● 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.