Description
976nm 300mW COS Chip Multi Mode Laser Diode
Features:
- 976nm 300mW COS package with compact structure
- 3μm emitter stripe and 2nm spectral width
- High reliability, low power consumption
Applications:
- EDFA & Fiber Amplifier Pumping: Widely used as a high-efficiency pump source for Erbium-Doped Fiber Amplifiers (EDFAs), CATV optical amplifiers, and telecommunication booster modules.
- Compact Fiber Laser Modules: Applied in low-power fiber lasers, fiber amplifiers, and integrated laser modules for industrial sensing and optical testing.
- Optical Sensing & Monitoring Systems: Used in distributed fiber sensing, temperature/strain monitoring, and industrial optical detection equipment.

This 976nm 300mW multimode laser diode in COS package features a 3μm emitter stripe and 2nm linewidth, delivering high efficiency, stable output, and excellent fiber coupling performance. It is widely applied in EDFA pumping, fiber lasers, optical sensing, biomedical instruments, and optical communication, offering a compact, reliable, and cost-effective solution for telecom and industrial optical systems.
Data Sheet
Item No: COS976DL03
| Optical | |
| Center Wavelength | 976nm |
| Wavelength Tolerance | ±5nm |
| Output Power | 300mW |
| Emitter Width | 3um |
| Polarization | TE |
| Wavelength Temperature Coefficient | 0.28/℃ |
| FWHM | 2nm |
| Fast Axis FWHM | 30DEG |
| Slow Axis FWHM | 8DEG |
| Electrical | |
| Operating Current Iop | 0.1A |
| Threshold Current Ith | 0.4A |
| Operating Voltage Vop | 1.6V |
| Slope Efficiency | 0.81W/A |
| Conversion Efficiency | 50% |
| Thermal | |
| Test Temperature | 15~30℃ |
| Storage Temperature | -40~55℃ |
Drawing:

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