Hermetic Fiber-Optic Feedthroughs
FTO manufactures custom hermetic fiber-optic feedthroughs for demanding applications involving vacuum, high pressure, extreme temperatures, cryogenics, and radiation.
Every solution is engineered to specification to meet your unique performance and integration requirements.
Fiber optic feedthroughs provide reliable optical transmission across physical barriers while maintaining complete environmental isolation.
Engineered for the most demanding conditions, they can withstand pressures up to 1000 bar, high-vacuum environments, temperatures from cryogenic conditions near 0.5 K to over +600 °C, as well as corrosive and high-radiation environments.
With exceptional sealing performance and ultra-low leak rates, each feedthrough is engineered with carefully selected materials and sealing technologies to deliver long-term reliability in the most demanding applications.
FTO’s fiber optic feedthroughs offer exceptional flexibility, with select models fully reconfigurable, disassemblable, and reusable for evolving experimental and industrial applications.
Custom solutions can incorporate customer-supplied specialty fibers, multi-channel configurations, and hybrid optical/electrical feedthroughs.
Beyond standard flange interfaces, FTO delivers fully customized mechanical and optical designs engineered to meet demanding performance and integration requirements.
FTO’s fiber optic feedthroughs support a wide range of single-mode (SM), multimode (MM), polarization-maintaining (PM) and ZBLAN fluoride fibers. Multimode configurations accommodate core diameters from 50 µm to 1000 µm, providing the flexibility to meet diverse application requirements.
FTO’s fiber otpic feedthroughs are available with ISO, CF, and KF flange standards, enabling seamless integration into a wide range of vacuum chambers and system architectures.
FTO’s fiber optic feedthroughs are offered in two main configurations to suit a wide range of integration needs.
Bulkhead style:
Equipped with standard FC/PC, FC/APC, SMA, or ST connectors, this configuration enables quick connection and easy replacement of sensitive fibers, greatly simplifying maintenance operations within the chamber.
Inline style:
Designed without connectors at the flange, this version uses pigtails terminated with connectors, allowing for higher fiber density integration. It offers an excellent balance between compactness, performance, and cost-efficiency, making it ideal for multi-channel systems.
Technical specifications of hermetic fiber optic feedthroughs
- ISO, CF, KF & custom flanges
- Threaded feedthroughs using either NPT or standard bolt threads
- Bulkhead or inline style
- UHV compatible materials used for all feedthroughs
- SMA, FC/PC, FC/APC connectors
- Singlemode & multimode optical fibers (50 to 1000 um core)
- Single and multiple port designs (1 to 6 channels)
- 190 to 4500 nm operating wavelength range
- Temperature range: Cryogenic to +600C
Benefits of fiber optic feedthroughs
- Maintain vacuum and pressure in both directions
- Allow light and signals to be transmitted over a longer distance than traditional cable feedthrough
Applications of fiber optic feedthroughs
- High pressure environment (up to 1000 bars)
- High vacuum environment (up to 10 -6 mbar)
