3x1 vs 7x1 Pump Combiner
Compare KernsTech 3x1 and 7x1 pump-combiner configurations by pump fiber, output fiber and laser architecture.
you already know you need a pump-only combiner but need to decide whether three or seven pump inputs fit the architecture.
Quick comparison
| Selection point | 3x1 Pump Combiner | 7x1 Pump Combiner |
|---|---|---|
| Pump wavelength | 800-1000 nm | 800-1000 nm |
| Pump input fiber | 105/125 0.22NA | 105/125 or 200/220 0.22NA |
| Output fiber | Y/125 or 200/220 | 200/220, Y/250 or 20/400 |
| Pump efficiency | >95% | >95% |
| Max power / single pump | 200 W | 200 W |
| Primary decision | Fewer pump inputs | More pump inputs / larger output-fiber options |
Which one should you choose?
Choose 3x1 Pump Combiner when...
Choose 3x1 when three pump inputs are sufficient and the required output fiber matches the listed 3x1 options.
Choose 7x1 Pump Combiner when...
Choose 7x1 when the architecture needs seven pump inputs or the listed larger output-fiber options.
Recommended starting points
Common questions
Does 7x1 automatically mean higher power?
Not by itself. Available configurations support up to 200 W per single pump for both 3x1 and 7x1; total architecture also depends on the selected fibers and engineering configuration.
What should I send for RFQ?
Pump port count, pump wavelength, pump fiber, output fiber, power per pump and preferred package.
Send the application and known parameters. Engineering can confirm the remaining specification.