
Combined Vacuum Fiber Feedthroughs
Customizable Combined Pigtail & Adapter Orientation

Basic Information
Contact
For any technical questions or inquiries, please do not hesitate to contact us.

Sales Department
Tel.: +420 493 765 111
sales@sqs-fiber.cz

Our combined-interface feedthroughs let you choose pigtail and adapter orientation on demand. The feedthrough seal supports most fiber types—including polarization-maintaining—and installs in a standard or customized flange alongside any other feedthrough. Offered with or without flange.
Pigtailed variants accommodate a wide range of fibers and connectors (FC/PC, FC/APC or SMA 905) on either the vacuum or air side. Machined from UHV-compatible materials and sealed via proven processes, they perform reliably in high and ultra-high vacuums. Feedthroughs can be removed from the flange for easy maintenance or reconfiguration.
Advantages
- Configurable combined pigtail & adapter orientation
- Feedthrough seal compatible with SM, MM & PM fibers
- UHV-rated (≤10⁻¹⁰ mbar) leak-tight performance
- Tubing options: stainless steel, PEEK, PTFE
Applications
- Semiconductor industry - Optical interconnects in wafer processing
- Tokamak - Fiber-based plasma diagnostics through reactor vessel walls
- Particle accelerators - Optical diagnostics and timing in beamlines
- Cryogenics: Fiber routing in cryogenic environments down to –196 °C
- Aerospace: Avionics and satellite instrumentation feedthroughs
- Photonics research: Experimental setups requiring vacuum-compatible optics
Technical Specifications
Fiber type | SM, MM (GRIN/STEP) | PM |
Wave range | UV, VIS, NIR | VIS, NIR |
Extinction ratio [dB] | / | > 20 or >25 dB |
Slow/fast fiber axis rotation error [°] | / | +/- 2.5° |
Operating temperature [°C] | -40 to +85 | -20 to +70 |
Airtightness [mbar.l/s] | 10 -10 to 10 -12 | |
Flange type | CF, KF, custom flanges or without flange | |
Flange material | 304, 304L, 316L, others | |
Grommet body material | 304L, 316L | |
Pigtail connector interface | FC/PC, FC/APC, SMA905, LC/APC, LC/PC | |
Adapter connector interface (female) | FC/PC, FC/APC, SMA905 | |
Tube type | PTFE (900 um), stainless steel flexible tube |
Contact
For any technical questions or inquiries, please do not hesitate to contact us.

Sales Department
Tel.: +420 493 765 111
sales@sqs-fiber.cz
