Optical Feedthroughs

Vacuum Products

For ordering please see

'How To Order'

UV/VIS Multi-mode Step-Index

Fibre Optic vacuum feedthroughs available through Laser Support Services are constructed with 100, 200, 400, 600 and 1000 um VIS/VIS fibres. These arre designed for vacuum applications requiring fibre optic connection from inside a vacuum system to external equipment. The fibre is hermetically sealed into a stainless steel shell using the latest in glass bonding technology and terminates on both vacuum and air side with standard SMA 905 terminations.

Ultra High Vacuum polyimide/aluminium buffered optical fibres are available to meet the demands of UHV environments.

All optical fibres available through Laser Support Services are core-cladding composite. The core, or the filament that guides the light consits of a thin strand of high transmission fused silica. The cladding consists of an outer layer of doped, lower refractive index fused silica. This two layer design tightly confines the light to the central core of the fibre which in turn delivers a maximum amount of light at the far end. 

Fittings to accompany the UV/VIS Multi-mode Step-Index:

  • CF Flanges 1 & 2 Fibres - UV/VIS

  • CF Flanges 4 Fibres - UV/VIS

  • KF Flanges 1 & 2 Fibres - UV/VIS

  • KF Flanges 4 Fibres - UV/VIS

  • Bolt Style Feedthrough 1 Fibre - UV/VIS

  • In Vacuum SMA 905 to SMA 905 Connector - UV/VIS

  • In Vacuum SMA 905 Connector to Bare Fibre End - UV/VIS

  • In Vacuum Cable Assembly Jacketing Options

  • Coupler

  • Air Service SMA 905 to SMA 905 Connector - UV/VIS

Please contact us to discuss your requirements in detail or if you have any further questions.

Multi-mode Graded-Index

Multi-mode Graded-In Fibre Optic Feedthroughs available through Laser Support Services, are constructed with 62.5/125um core/clad graded-index multi-mode fibres. They are designed for vacuum applications requiring fibre optic connection from inside a vacuum system to external equipment. The fibre is hermetically sealed into a stainless steel shell using the latest in glass bonding technology and terminated on both vacuum and air side with standard SMA 905 terminations.

Ultra High Vacuum polyimide buffered optical fibres are available to meet the demands of UHV environments.

All optical fibre available through Laser Support Services is constructed as a core-cladding composite. The core, or the filament that guides the light consists of a thin strand of high transmission fused silica. The cladding consists of an outer layer of doped, lower refractive index fused silica. This two layer design tightly confines the light to the central core of the fibre which in turn delivers a maximum amount of light at the far end. During the drawing process, particular attention is paid to control the fibre diameter, allowing the fibre to centre well in connectors and boast a low loss rate.

Fittings to accompany the Multi-mode Graded-Index Optical Feedthroughs:

  • CF Flanges 1 & 2 Fibres

  • KF Flanges 1 & 2 Fibres

  • Bolt Style Feedthrough 1 Fibre - VIS/NIR

  • In Vacuum SMA 905 to SMA 905 Connector

  • In Vacuum SMA 905 Connector to Bare Fibre End

  • In Vacuum Cable Assembly Jacketing Options

  • Air Service SMA 905 to SMA 905 Connector

  • Couplers
     

Fibre Optic Accessories

A range of fibre optic feedthrough accessories are available through Laser Support Services.

Bifurcated Cables - Vacuum & Air

Bifurcated cable assemblies are Y-shaped assemblies with two fibres of the same diameter. The two fibres are side-by-side inside of a common premium SMA 905 connector on one end. From the breakout point of the assembly, the two fibres diverge into two legs.

  • UHV and air-service versions are available

  • UHV version is made from 100 percent UHV compatible materials including a PEEK weave jacket. UHV versions are split at 605mm from the common end.

  • Air service assemblies are made with a PVC jacket, blue for UV and red for IR. Air-service versions are split at 635mm from the common end.

Please contact us to discuss your requirements or to ask any further questions.

Reflection Probes - Air

Reflection probes are ideally suited for measuring specular or diffuse reflective from a surface, fluorescence from solid surfaces, or back scattering and fluorescence in solutions and powders. These probes are made with premium SMA 905 connectors and stainless steel ferrules. Fibres are arranges with six illumination fibers around one read fibre. The centre of read fibre splits from the other six fibres and couples to a spectrometer. The outer six illumination fibres couple to a light source. The probe is a 6.35mm in diameter and is 32.5 mm long.

Please note UHV versions are available upon request but do require additional fittings. Please contact us to discuss your exact requirements or to ask any further questions.

Collimating Lenses - Vacuum & Air
Collimating lenses use a high performance optical element (lens) manufactures using research-grade synthetic fused silica that has excellent transmission characteristics and higher operating temperatures than other elements.

Collimating lenses come set to standard effective focal length distances. However, a means of adjustment is built into the body to allow precision adjustments.

Please contact us to discuss your requirements or to ask any further questions.

Cuvette Holder

The UV/VIS cuvette holder couples to a light source and spectrometer to create absorbance or transmission measurement systems. Two collimating lens assemblies are mounted on either end of a square 1cm cuvette cell holder. A convenient slot for filters is built into the unit.

Please contact us to discuss your requirements or to ask any further questions.

Couplers
Coupler adapters are used to connect fibres with two similar terminations.

Please contact us to discuss your requirements or to ask any further questions.

Adapters

Adapters are used to connect fibres with different types of terminations.

Please contact us to discuss your requirements or to ask any further questions.

Adapters - Bare Fibres (Multi-use)

Bare fibre adapters can be used as the following devices:

SMA adapter

Ferrule
Bulkhead mount

Simply insert the bare fibre end into the collet and tighten. Bare fibre adapters are designed to fit on out polyimide buffered fibres only.

Please contact us to discuss your requirements or to ask any further questions.

 

Mounts
Mounts are made from 304 stainless steel and are ideally suited for UHV and air service

Please contact us to discuss your requirements or to ask any further questions.

 

Fibre Optic Cable Assembly Components

All individual components needed to assemble your own fibre optic cable assemblies are available from Laser Support Services Ltd. 

Fibre core sizes of 100, 200, 400, 600 and 1000um are available with either polyimide or aluminium buffers,

Premium stainless steel SMA 905 connectors and UHV compatible epoxy used in conjunction with polishing supplies and consumables allow custom configurations of cable assemblies to be manufactures at your own facilities.

Please contact us to discuss your requirements or to ask any further questions.

UHV Multi-mode Step-Index Polyimide Buffer Fibre

Polyimide buffer fibre is ideally suited for UHV environments and made with step index high-OH silica core for UV/VIS and low-OH silica core for VIS/NIR, doped silica cladding, and a polyimide buffer with a concentration of +/- 3um. Fibre is step-index and has a numerical aperture of 0.22 +/- 0.02 and a dull acceptance cone angle of 24.8'. This fibre is supplied non-terminated. Each fibre end is cleaved and not polished. Optical fibrew has been proof tested to 100kpsi.

Please contact us to discuss your requirements or to ask any further questions.

UHV Multi-mode Step-Index Aluminium Buffer Fibre

Aluminium buffer fibre is ideally suited for UHV environments and made with step index high-OH silica core for UV/VIS and low-OH silica core for VIS/NIR, doped silica cladding, and an aluminium buffer. Fibre is step-index and has a numerical aperture of 0.22 +/- 0.02 and a full acceptance cone angle of 24.8'.

Aluminium buffered silica/doped silica fibres are the latest technology to enable fibre optics to be used in some of the most harsh and extreme environments knows, including UHV applications. This metal fibre technology has the strongest adhesion of all fibre optic cables. It creates a hermetically sealed fibre and can withstand the highest temperatures of any fibre.

The fibre is supplied non-terminated. Each fibre is cleaved and not polished.

Please contact us to discuss your requirements or to ask any further questions.

SMA 905 Fibre Optic Connectors

SMA 905 fibre optic connectors are used to terminate UHV and air service fiber optic cables. These connectors accompany corresponding buffer/fibre type as stated previously. Use of a coupler is required to combine with fibre optic feedthroughs. SMA 905 connectors are made with stainless steel ferrules and bodies for UHV environments.

Please contact us to discuss your requirements or to ask any further questions.

Fibre Optic Jacketing

PEEK, stainless steel and silver-plated copper braid are ideally suited for use as fibre optic cable jcketing for UHV and other applications. The braided design facilitates ease of pump down. All materials used in manufacturing these braids are UHV compatible.

PEEK and PTFE cable wraps for bundling cables together are also available, please see vacuum accessories.

Please contact us to discuss your requirements or to ask any further questions.

Polishing & Lapping Equipment

  • Polishing plate

    • Made from safety glass with all corners and edges rounded. A hard flat surface is required for polishing fibre optic connectors.​

  • SMA Polishing Puck

    • Holds an SMA 905 connector in place for polishing. The puck is factory set to produce the correct ferrule length after polishing.​

  • Fibre Scribe

    • Is a professional tool utilising a carbide tipped 30' wedge and is ideal for scribing fibres to produce a clean cleave on the fibre.​

  • Inspection Scope

    • Is a 100x magnification scope that features a low cost design that will inspect fibre optic terminations during and after the poishing process.​

  • Bare Fibre Chuck

    • Ideally suited to hold an SMA bare fibre holder in place during the polishing procedure.

  • Bare Fibre Polishing Holder

    • Substituted for an actual ​connector during the polishing process. Choose from 4 sizes to suit the fibre size that you are polishing.

  • Bare Fibre Polishing Complete Kit

    • Offered for users who wish to have a complete set of holders and chuck

      Please contact us to discuss your requirements or to ask any further questions.

Safety Equipment and Consumables

  • Plastic Safety Glasses

    • Essential when cuting or scribing fibre​

  • Fibre Optic Bin/Trash Can

    • A safe desktop bin to correctly dispose of small fibre scraps​

  • Vinyl Polishing Work Mat

    • Black in colour to assist in locating loose fibres scraps easily to avoid potential hazards.​

  • Fibre Optic Tweezers

    • Low-slip resin coated tip to assist in holding and picking up fibre optic scraps, but also useful for fibre optic splinters (if they occur!)​

  • High Temperature UHV Compatible Epoxy

    • Supplied in single, two part, 4g packs eillimating the need for masuring in a mixing cup. Ideally suited for environments to 1x10(-10) Torr and operating temperatures of 250'C and above, up to 400'C for brief periods.​

  • Piano Wire

    • Suited to push into connectors where a fibre has broken off inside of the connector during the polishing process.​

      Please contact us to discuss your requirements or to ask any further questions.


 

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Laser Support Services Ltd., 1990-2019

Free, no obligation quotes. Always.

Laser Support Services
School Drive
Ovenstone
Fife
KY10 2RR

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Reg Co: SC126831

VAT No: GB 561 5209 55

Tel: +44 (0) 1333 311938   -   Fax: +44 (0) 1333 312703   -   enquiries@laser-support.co.uk   -   www.laser-support.co.uk