21060 Corsair Blvd. Hayward, CA 94545

Vacuum Feedthroughs, Heating Elements, and Custom Thermal Systems for
Aerospace, University Research, Semiconductor, Medical and OEM Applications

Fiber Optic Cable Feedthrough

Fiber Optic Feedthrough

Need to Pass Fiber Optics Through a Vacuum Wall?? Get BCE Fiber Optic Feedthroughs

Fiber optic feedthroughs are used in many vacuum applications. They are designed for a variety of vacuum applications where fiber optic connections are needed inside a vacuum system. Custom configurations are easily accommodated.

Specifications

  • Temperature: Application specific
  • All Dimensions (A to E) are customer specified.
  • Multiple material and component options available.
  • Outgassing: meets NASA ASTM E595.
  • Total Mass Loss (TML): <1.0%.
  • Collected Volatile Condensable Materials: <0.1%
  • Dielectric Constant (1 KHz): 3.8

Drawing


Fiber Optic Feedthroughs

Fiber Optic Feedthroughs provide the interface between fiber optics and UHV technology. They allow fiber optic cables to be designed in vacuum applications requiring connections from the inside of a vacuum system to the external equipment.

Feedthroughs using sealing glass have a low melting point formulated for coefficients of thermal expansion suitable for sealing numerous combinations of metals, glasses and glass type ceramics. Fiber optic glass carries much more information and is thus immune to electromagnetic interference. The fiber is made of drawn silica surrounded by a transparent clad material that has a lower index of refraction. Multiple transmission paths are considered multi-mode fibers having a wider core diameter used for shorter distances. Singular mode fibers can be used for lengths longer than 1,000 meters.

Applications / Uses

Communications: An excellent medium in the computer and telecommunications industry due to its flexibility. With light propagating at a lower attenuation compared to nickel plated copper wire cables, it is very effective at long distances. Every fiber carries many autonomous channels using a different light wave length. The glass is resistant to electrical interference that you might see with grounded thermocouple feedthroughs for example. Fiber optic cables that are non-armored conduct no electricity making them optimal for use in equipment at high voltages.

Communications: An excellent medium in the computer and telecommunications industry due to its flexibility. With light propagating at a lower attenuation compared to nickel plated copper wire cables, it is very effective at long distances. Every fiber carries many autonomous channels using a different light wave length. The glass is resistant to electrical interference that you might see with grounded thermocouple feedthroughs for example. Fiber optic cables that are non-armored conduct no electricity making them optimal for use in equipment at high voltages.

Power Transmission: Utilizing a photovoltaic cell, which converts light into electricity, power can be transmitted. MRI machines for example are very sensitive to metallic conductors and the use of Fiber Optic Feedthroughs and Harnesses for this reason is ideal.

Sensors: Measuring systems use fiber optics due to their small size and the fact that no electrical power is required. Some applications use the fiber optic cable as the sensor while others use it to connect to a different type of sensor. The fiber can be used to measure pressure, temperature, and the amount of tension on a device. Using a localized fiber optic tip, or transmitting light in the fiber as it measures the wavelength, a sensor can be particularly useful in distances up to one meter or at the source.

In Aerospace, jet engines can transmit radiation as the engine gets hotter and hotter with a mechanical failure. Using fiber optics to transmit this radiation by way of an analytical tool can measure and provide the user with advance notice.

Fiber Optic Advantages: The advantages are numerous such as carrying over 3-million phone call on one fiber. The light transmitted through the fiber is un-affected by electrical magnetic signals. There is low attenuation loss over long distances. The cost is lower than copper conductors and the fiber optic medium does not transmit electricity.

BCE Engineering & Quality Assurance

BCE engineers provide decades of experience in design and development, delivering a wealth of empirical data and experience. BCE welcomes your custom requirement and will design and deliver a part that meets your challenging needs.

BCE is recognized for its commitment to quality and excellence by being certified in accordance with ISO 9001:2015.
ISO 9001
 

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