1550nm Narrow Linewidth Laser Diode
Techwin’s 1550nm Narrow Linewidth Laser Diode is designed for precision optical applications requiring high wavelength stability, low noise, and excellent spectral purity. With ultra-narrow linewidth options down to 3 kHz and VBG stabilization, this laser diode is suitable for demanding applications such as coherent LiDAR, fiber optic sensing, optical communications, and microwave photonics.
Ultra-Narrow Linewidth Laser Diode for Precision Applications
An ultra-narrow linewidth laser diode provides a highly stable optical signal with a narrow spectral width, making it suitable for applications where frequency stability, coherence, and low noise are important. Techwin’s 1550nm solution is available with single-mode or polarization-maintaining fiber output and a 14-pin butterfly package for integration into advanced photonic systems.
- 1550nm center wavelength
- Ultra-narrow linewidth options of 3, 5, and 30 kHz
- VBG stabilization for wavelength stability
- Low relative intensity noise
- High side-mode suppression ratio
- High optical isolation
- Single-mode and polarization-maintaining fiber options
- 14-pin butterfly package
- FC/APC fiber connector
- Fiber Optic Sensing
- Laser Radar (LiDAR)
- Optical Communication
- Microwave Photonics
Parameters
| Parameters | Min | Typ | Max | Unit |
| Output Power. | 10 | mW | ||
| Center Wavelength | 1550 | nm | ||
| Lorentz Linewidth | 3/5/30 | kHz | ||
| Side mode Suppression Ratio | 50 | dB | ||
| Polarization extinction ratio | 20 | dB | ||
| Relative intensity noise | -140 | dB/Hz | ||
| Optical isolation | 40 | dB | ||
| Threshold current | 40 | mA | ||
| Operating Current | 300 | mA | ||
| Operating Voltage | 1.8 | V | ||
| TEC Temperature Setting | 15 | 35 | C | |
| TEC Current | 2.5 | A | ||
| TEC Voltage | 4.8 | V | ||
| Thermistor Resistance @ 25℃ | 10 | kΩ | ||
| PD Operating Voltage | -5 | V | ||
| PD Current | 2 | mA | ||
| PD dark current | 1 | nA | ||
| Operating Temperature | 0 | 50 | ℃ | |
| Storage Temperature | -40 | 85 | ℃ |
Mechanical Dimensions and PIN Definition:
| PIN | Description | PIN | Description |
| 1 | Rt | 8 | NA |
| 2 | Rt | 9 | NA |
| 3 | LD(-) | 10 | N.A. |
| 4 | PD(+) | 11 | LD(+) |
| 5 | PD(-) | 12 | N.A. |
| 6 | TEC(+) | 13 | N.A. |
| 7 | TEC(-) | 14 | N.A. |
Applications
Autonomous Driving
Coherent Doppler LiDAR for Wind Sensing
3D Laser Scanning and Laser Ranging
Phase-sensitive Optical Time Domain Reflectometer (Φ-OTDR) sensing system
Brillouin OTDR (BOTDR) Sensing System
Distributed Temperature Sensing (DTS) System
Why Choose a 1550nm Narrow Linewidth Laser Diode?
A narrow linewidth optical source can provide the spectral stability and coherence required by advanced sensing, ranging, and communication systems. Techwin’s 1550nm laser diode combines narrow linewidth performance with low noise, VBG stabilization, and flexible fiber-output configurations to support different system requirements.
Frequently Asked Questions
1. What is a 1550nm Narrow Linewidth Laser Diode?
A 1550nm Narrow Linewidth Laser Diode is a laser source operating at a center wavelength of 1550 nm, designed for applications requiring a narrow spectral linewidth and stable optical output.
2. What is the minimum linewidth of Techwin’s 1550nm Laser Diode?
Techwin’s 1550nm Narrow Linewidth Laser Diode series offers linewidth options of 3 kHz, 5 kHz, and 30 kHz, depending on the configuration. The minimum specified linewidth is 3 kHz.
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3. What are the main applications of a 1550nm Narrow Linewidth Laser Diode?
Common applications include fiber optic sensing, LiDAR, optical communication, and microwave photonics, where narrow linewidth and low noise can support precise optical measurements.
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4. What fiber output options are available?
The product is available with single-mode fiber or polarization-maintaining (PM) fiber output, with an FC/APC connector, according to the product page.
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5. What is the role of Volume Bragg Grating (VBG) stabilization?
VBG stabilization helps narrow and stabilize the laser’s spectral output, making it useful for applications that require a highly stable optical frequency.
6. How do I choose the right 1550nm Narrow Linewidth Laser Diode?
Consider the required linewidth, output power, fiber type, polarization requirements, and operating conditions. Techwin can help identify a suitable configuration based on your application.