Pump Combiner & Accessories
High Return Loss High Extinction Ratio
High Stability and Reliability
Applications:
Test Instrument
Fiber Sensors
Product Development
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Product Description
| Parameter | Spec | Unit | ||||||||
| Center Wavelength | 2000 | 1150 | 1130 | 1064 | 980 | 850 | 780 | nm | ||
| Operating Wavelength Range | ±50 | ±50 | ±50 | ±30 | ±10 | ±10 | ±10 | nm | ||
| Typical Insert loss@23℃ | 0.8 | 0.3 | 0.3 | 0.5 | 0.6 | 0.6 | 0.6 | dB | ||
| Max.Insertion Loss @23℃ | 1.0 | 0.5 | 0.5 | 0.7 | 0.8 | 0.8 | 0.8 | dB | ||
| Min.Return Loss | 50 | 50 | 50 | 50 | 50 | 50 | 50 | dB | ||
| Typical Extinction Ratio @23℃ | 22 | 30 | 30 | 30 | 30 | 28 | 28 | dB | ||
| Min.Extinction Ratio @23℃ | 20 | 28 | 28 | 28 | 28 | 25 | 25 | dB | ||
| Input&Output Fiber Type | SM→SM or SM→PM | / | ||||||||
| Max.Optical Power(CW) | 300 | mW | ||||||||
| Max.Tensile Load | 5 | N | ||||||||
| Operating temperature | -5~+70 | ℃ | ||||||||
| Storage temperature | -40~+85 | ℃ | ||||||||
Product Description
The Pump Combiner Accessories are high-power optical components designed to efficiently merge multiple pump laser signals into a single output fiber, enabling high-energy laser systems and amplifiers. Utilizing fused biconical taper (FBT) or wavelength-division multiplexing (WDM) technology, they support configurations from 2x1 to 19x1, with single-mode, multi-mode, or polarization-maintaining (PM) signal ports. The devices feature ruggedized housings with high-temperature epoxy and strain relief, ensuring reliable operation in high-power, high-temperature environments typical of industrial laser systems.
Features
High Power Handling: Supports total pump power up to 100 W CW (multi-mode) or 50 W CW (single-mode/PM), with peak power handling up to 1 kW for pulsed applications.
Efficient Power Coupling: Typical coupling efficiency ≥95% (pump ports) and ≥90% (signal port), minimizing power loss and thermal buildup.
Wide Wavelength Compatibility: Pump ports support 976 nm, 980 nm, 1480 nm, and 1550 nm; signal ports accommodate 1030–1625 nm for fiber lasers and amplifiers.
Customizable Design: Available in free-space (bulk optics) or all-fiber configurations, with options for PM signal fibers (PER ≥25 dB) or high-numerical-aperture (NA) pump inputs.
Thermal Stability: Operates from -20°C to 80°C with thermal drift ≤±0.3 dB, supported by passive heat dissipation via aluminum alloy housing.
Applications
High-Power Fiber Lasers: Combines multiple 976 nm pump diodes to achieve kW-level output for industrial cutting, welding, and additive manufacturing.
Optical Amplifiers: Merges 980 nm/1480 nm pump light with 1550 nm signal light in EDFAs for long-haul telecom and CATV networks.
Medical Laser Systems: Integrates 808 nm pump diodes in solid-state lasers for dermatology (e.g., hair removal, vascular treatments) and ophthalmic surgeries.
Research & Development: Enables multi-wavelength pumping in ultrafast laser systems (e.g., Ti:sapphire, Yb-doped fibers) for spectroscopy and material science.
Aerospace & Defense: Reliable pump combining in airborne laser weapons and satellite-based laser communication terminals.
Faq
Q: What is the difference between FBT and WDM pump combiners?A: FBT combiners use fused fiber tapers for same-wavelength pump merging, while WDM combiners use filters for different-wavelength pumps (e.g., 980 nm + 1480 nm).
Q: Can I combine pumps with different core diameters?A: Yes, custom tapers accommodate pump fibers with core diameters from 50 μm to 200 μm (multi-mode) or 10 μm to 40 μm (single-mode).
Q: How is signal port polarization maintained in PM combiners?A: The signal port uses PM fiber with precise alignment to the pump fiber's slow axis, ensuring PER ≥25 dB in the output.
Q: What is the maximum allowable differential pump power between ports?A: ≤10 dB power difference between pump ports to ensure uniform coupling and prevent hot spots.
Q: Does it require periodic calibration for long-term use?A: No, the all-fiber or fused design provides stable performance over 10,000+ hours without recalibration, backed by a 3-year warranty.
