Avantes - Product Catalog - 2024 - digital

Fiber Optic Probe Properties

Fiber Optic Cables

Avantes offers a broad standardized product range of fiber optics as described in this catalog For special cases, Avantes modifies these fiber optic cables and probes to customers’ requests Most materials in our fiber optic assemblies can be replaced with others to improve specific chemical or thermal resistance or enhance vacuum or pressure properties Please get in touch with our fiber design engineers with your particular request

Avantes offers a wide range of fiber-optic cables, which can be made in various lengths and configurations to meet your needs For common applications, a 2-meter length is sufficient For this reason, it is our standard fiber length

Avantes offers SMA-905 or FC/PC connectors, which can be the same or different on both ends For some applications, special round-to linear fiber cables are recommended A bundle of fibers is configured in a round pattern on one end and a linear array on the other The linear array (typically 1 mm in height) is aligned with the slit height of the spectrometer, which is also 1 mm This fiber configuration provides maximized light throughput for applications requiring high sensitivity Fiber optic cable types and diameters are recommended based on the wavelength range and the sensitivity required for a measurement In general, different fiber types can be classified For the UV range, high OH UV/VIS fiber is used For customers working below 240 nm in the UV, a special high OH UV/VIS fiber called solarization resistant fiber (SR) is available For longer wavelengths, low OH VIS/NIR fiber is recommended The best of both worlds can be achieved with our broadband (solarization-resistant) fiber, which is our standard This gives you the com bined performance of the UV, UV-SR, and IR fibers Avantes also offers a variety of jacketing options, including Kevlar-reinforced PVC sleeving with PTFE inner tubing (standard), chrome-plated brass mono coil, stainless steel BX, silicone-coated stainless steel mono coil, and other special jacketing upon request Special high-temperature epoxy (HT) is available for applications requiring high-temperature resistance and should be specified at the time of order

In the following paragraphs, some of the essential technical parameters are listed for the materials we use

Thermal Resistance The thermal resistance of a fiber-optic assembly depends on some of the materials used:

1 Fiber: the standard fiber design has a polyimide buffer, covering a wide thermal range –190 to 400 °C

2 Jacketing: the standard jacketing is PVC-based and has a small temperature range (-20°C to 65°C) For higher temperatures, a flexible metal jacketing (-BX/ME) with silicone inner tubing (up to 250°C) or stainless steel tubing (not flexible, to 750°C) is recommended 3 Probe ends: connectors and ferrules are standard made of metal and have a wide temperature range A limited temperature range is applicable for special plastics like PVC, PEEK, and Teflon 4 Bonding epoxy: the standard epoxy used is a heat-curing bonding epoxy with a temperature range of –60°C to 175°C The curing temperature is standard 100 °C For high-temperature ranges (order code -HT), the curing temperature is 200°C For the HTX (extremely high temperature), fibers and probes ceramic solution are available to realize a process that can withstand temperatures up to 500°C

Recommended wavelengths for different cables: 200-2500 nm: UV/VIS/NIR (UVIR) UV/IR is available in core sizes 100, 200, 400, and 600 µm

Technical Data

200-800 nm: Solarization resistant (-SR) 250-800 nm: UV/VIS (UV) 350-2500 nm: VIS/NIR (IR)

Temperature range Fiber

Jacketing

Probe end

Bonding

Standard metal/ PVC/PEEK Standard metal/ PEEK Standard metal/ PEEK

–20°C to +65°C Standard Polyimide

Standard Epoxy

Standard PVC

Metal (-BX/ME) or silicone (-MS) Metal (-BX/ME) or silicone (-MS)

-30°C to +100°C Standard Polyimide

Standard Epoxy

High temperature curing epoxy

-60°C to +200°C (HT) Standard Polyimide

FULL PRODUCT SPECIFICATIONS

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