Hermetic fiber optic feedthroughs

Reconfigurable hermetic fiber-optic feedthroughs for vacuum and pressure (up to 600 bars)

Key features

  • from vacuum to 600 bars
  • 10-8 mbar.l/s hermeticity
  • broad wavelength range
  • single-channel
  • SM or MM fibers
  • FC/PC or SMA adapters
  • reconfigurable

Reconfigurable hermetic fiber-optic feedthroughs for vacuum and pressure (up to 600 bars)

The KTRAV-M10 reconfigurable hermetic fiber-optic feedthroughs are suitable for vacuum and pressure applications up to 600 bars. They ensure a high level of hermeticity better than 10-8 mbar.l/s.

Upon customer’s request, our production team can reconfigure the feedthrough so that it can be reused for a different application.

Indeed, these feedthroughs are built with an internal fiber rod identical to the fiber used upstream and downstream. This fiber rod can be disassembled and replaced by another one with the fiber of your choice when back in production.

These reconfigurable hermetic fiber-optic feedthroughs can be made with either singlemode [SM] fibers or multimode [MM] graded-index [GI] fibers as well as step-index [SI] fibers.

For fibers with a cladding diameter of 125 µm maximum, they are terminated with an FC/PC connector. For core diameters up to 1000 µm, they come with SMA termination. The connector can also be disassembled and replaced by another type.

For instance, one feedthrough with a singlemode SMF28 fiber and an FC/PC connector can be reconfigured with a multimode step-index 400 µm core diameter fiber and an SMA connector. It can hence be reused for a completely different application.

Please contact us to discuss your specific requirements.

  • KTRAV-M10-FCPC

    Pressure
    from vacuum to 600 bars
    Hermeticity
    10-8 mbar.l/s
    Sealing technology
    epoxy
    Housing material
    stainless steel 304L
    Panel drilling diameter
    10.2 mm 0/+0,3
    Panel thickness
    5 mm min.; 20.5 mm max.
    Tightening torque
    7.5 Nm max.
    Adapter interface
    FC/PC
    Fiber type
    SM, MM GI50, MMGI62.5, MM SI with 125 μm cladding
    Insertion loss
    < 1 dB max. @1300 nm (0.3 dB typ. @1300 nm on SMF128)
    Operating wavelength range
    200-2000 nm; depending on the fiber
    Operating temperature range
    -55°C to +125°C
    Storage temperature range
    -55°C to +170°C

  • KTRAV-M10-SMA

    Pressure
    from vacuum to 600 bars
    Hermeticity
    10-8 mbar.l/s
    Sealing technology
    epoxy
    Housing material
    stainless steel 304L
    Panel drilling diameter
    10.2 mm 0/+0,3
    Panel thickness
    5 mm min.; 20.5 mm max.
    Tightening torque
    7.5 Nm max.
    Adapter interface
    SMA
    Fiber type
    MM SI up to 1000 μm core
    Insertion loss
    < 3 dB max. @850 nm (2 dB typ. @850 nm on 600 μm fiber)
    Operating wavelength range
    200-2000 nm; depending on the fiber
    Operating temperature range
    -55°C to +125°C
    Storage temperature range
    -55°C to +170°C