1625nm Single Mode High Power FP Laser Diode QCW TO Package
1625nm high power FP laser diode with QCW operation and single mode output, optimized for OTDR, methane gas sensing, and fiber optic testing applications.
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Description
The 1625nm Single Mode High Power FP Laser Diode in QCW TO Package is specifically designed for applications requiring high peak power and extended wavelength operation. Compared to standard 1550nm devices, the 1625nm wavelength offers enhanced performance in specialized applications such as OTDR testing and gas sensing, particularly for methane (CH₄) detection.
This FP laser diode operates in quasi-continuous wave (QCW) mode, delivering high pulsed output power up to 300 mW. With stable single-mode emission and optimized slope efficiency, it ensures reliable and consistent optical performance under demanding conditions.
The device features excellent wavelength stability and a predictable temperature coefficient, making it suitable for precision measurement systems. Its compact TO package allows for easy integration into optical modules and industrial systems requiring robust and efficient laser sources.
Key Features
• High pulsed output power up to 300 mW
• 1625nm wavelength optimized for OTDR and gas sensing
• Single mode operation for stable beam quality
• QCW operation for high peak performance
• Stable wavelength with low temperature drift
• Compact TO package for system integration
Applications
• Optical Time Domain Reflectometer (OTDR)
• Methane (CH₄) gas sensing systems
• Fiber optic testing and diagnostics
• Laser ranging and measurement systems
• Industrial sensing and monitoring
Technical Parameters
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Threshold Current | Ith | CW, 25°C | – | 27 | 28 | mA |
| Slope Efficiency | SE | I = Ith + 20 mA, QCW | 0.32 | 0.34 | – | W/A |
| Output Power (Pulsed) | Po | I = 1200 mA, QCW, 25°C | 280 | 300 | – | mW |
| Output Power (85°C) | Po | I = 1200 mA, QCW, 85°C | – | 150 | – | mW |
| Forward Voltage | Vf | I = 1200 mA, QCW | – | 2.78 | 2.99 | V |
| Series Resistance | Rs | I = 500 mA, 25°C | – | 1.94 | 2.33 | Ω |
| Center Wavelength | λc | I = 500 mA, QCW | – | 1626 | – | nm |
| Wavelength Temp. Coefficient | Δλ/ΔT | 25–85°C | – | 0.58 | – | nm/°C |
QCW condition: Pulse width = 10 µs, Duty cycle = 1%
Product Size
Performance Curve
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