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With 59 Gratings-related patents, OFS is a leader in the creation and production of fiber Bragg gratings. We offer a full array of FBG types, such as Stablizer gratings, High Reflector Gratings, Wide Band gratings, Long Period gratings, and Fiber Arrays. We’ve developed capabilities for write-through coatings, where the acrylate does not need to be stripped from the fiber in order to write a grating, and we’ve recently developed the ability to write gratings in high-temperature fibers coated with our proprietary high-temperature PYROCOAT™ polyimide.
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Holographic gratings for spectroscopic application.
Grating constants of up to 4000 lines/mm can be produced. Dimensions of up to 60 mm apertures with active optical wavelengths from 200 nm to 800 nm are available. These gratings show high performing surfaces with very precise line shapes and transmission for better spectral performance.
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As pioneers in the online monitoring of high power lasers, Gentec-EO brought you the benefits of holographic sampling without the vulnerability of the coatings usually used to make holographic components. Holographic sampling means you get spatially accurate samples of the beam, from as much as 10% to as low as 10-8% of the incident power. It means you get multiple samples at the same time. It means that the polarization in the samples is accurately preserved. It means that more than 99% of the beam continues straight through the HBS to your application. It means that vibration, temperature and humidity will not affect your measurement. Because of our proprietary and unique fabrication process, you get all this with a damage threshold as high as that of the bare fused silica itself!
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This type of grating is the holographic counterpart of the classically ruled concave grating, invented by Rowland in the 19th century. The Rowland grating has straight grooves which are equally spaced along a chord of the concave surface.
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HORIBA Jobin Yvon's specialty gratings are found in cutting-edge scientific applications including ultrafast lasers, space flight instruments, astronomy, and synchrotron spectrometers. In addition, our high-volume replicated gratings are used in OEM instruments including spectrophotometers, bioanalyzers, and colorimeters. HORIBA Jobin Yvon's gratings for high volume OEM instruments can be found in our OEM Gratings catalog, while this catalog focuses on diffraction gratings for scientific and research applications.
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Fiber Bragg Gratings (FBGs) have quickly established themselves as one of the key enabling technologies behind the 'DWDM Revolution'. EDFA gain-equalising filters, WDMs and add-drop multiplexers, created as periodic variations in the refractive index of the core of the fiber itself, have all played their part in delivering almost unlimited bandwidth - and in accelerating the transition of the entire telecommunications industry from a digital electronic to a digital photonic world.
FBGs can also be used in the fabrication of optical strain and temperature sensors, with quasi-distributed measurements possible using gratings written sequentially into a continuous length of fiber.
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The rapid increase in the demand for greater transmission capacity, DWDM has emerged as the key transmission technique. There is continuous pressure to increase the number of DWDM channels and this in turn calls for improved performance from the passive multiplexing components.
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Laser tuning gratings are holographic gratings specially designed for wavelength tuning of lasers, such as dye lasers, Ti-sapphire, or external cavity diode lasers. The groove depth is optimized to yield maximum efficiency for one state of polarization.
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The gratings are holographically recorded with two highly collimated, clean and homogeneous beams, which give straight and equispaced grooves. The diffracted light from these gratings is free from ghost spectral lines. The randomly scattered light is as low as that from a good front surface aluminium mirror.
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These gratings are especially suited for use in laser pulse compression experiments. High diffraction efficiency, in combination with good spectral quality and high damage resistance makes these gratings useful in all kinds of laser pulse applications; both pulse compression using optical fibre grating pairs, and for amplification of pulses with chirped pulse amplification.
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Spectrogon manufacture high quality, holographically recorded, blazed profile gratings specifically for use in the UV region of the spectrum. These gratings are available in a range of groove densities between 300-2400 gr/mm. All are nominally blazed at 220 nm in the Littrow configuration. The processes used to manufacture these UV gratings were developed for use in making gratings for the soft x-ray region (1-10 nm) and are therefore designed to have very low stray and scattered light.
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| ... products without technical information |
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With 59 Gratings-related patents, OFS is a leader in the creation and production of fiber Bragg gratings. We offer a full array of FBG types, such as Stablizer gratings, High Reflector Gratings, Wide Band gratings, Long Period gratings, and Fiber Arrays. We’ve developed capabilities for write-through coatings, where the acrylate does not need to be stripped from the fiber in order to write a grating, and we’ve recently developed the ability to write gratings in high-temperature fibers coated with our proprietary high-temperature PYROCOAT™ polyimide.
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Fiber Bragg Gratings (FBGs) have quickly established themselves as one of the key enabling technologies behind the 'DWDM Revolution'. EDFA gain-equalising filters, WDMs and add-drop multiplexers, created as periodic variations in the refractive index of the core of the fiber itself, have all played their part in delivering almost unlimited bandwidth - and in accelerating the transition of the entire telecommunications industry from a digital electronic to a digital photonic world.
FBGs can also be used in the fabrication of optical strain and temperature sensors, with quasi-distributed measurements possible using gratings written sequentially into a continuous length of fiber.
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The rapid increase in the demand for greater transmission capacity, DWDM has emerged as the key transmission technique. There is continuous pressure to increase the number of DWDM channels and this in turn calls for improved performance from the passive multiplexing components.
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Mat EM 1002 with densities of 100, 150, 225 g/m2 is manufactured from chopped strands made of glass fibre bound together with an emulsion binder and drawn from E glass containing less than 1% of alkalies. The diameter of filament is 9 µm. The mat has a reduced strand linear density (tex) and the surface weight (density) comparing to the standard emulsion mat. It is very soft and it sets very well in a mould taking perfectly its very complicated shapes. It is characterised by a medium wet-out rate in a non-saturated polyester resin and by a good ability to remove air in the process of lamination.
Application
Emulsion bound mat EM 1002 with surface weights of 100 g/m2,150 g/m2 225 g/m2 is suitable for making laminates in a contact process. It is used with all types of non-saturated polyester resins for manufacturing products reinforced with glass fibre. It suites especially for manufacturing gel coated products as their reinforcement. It is also particularly recommended as the external layer of laminate in case of products with improved aesthetics of the surface.
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3B Continuous Filament Mat (CFM) is a non-woven mat made from Advantex™ filaments, consisting of continuous fibres randomly oriented in multiple layers. The glass fibre is bonded with silane coupling agent and the layers held together with a suitable binder.
3B offers two groups of CFM: powder mats and emulsion mats. Both groups provide end-users with different controls over rigidity, conformability, handling, wet-out and a range of tensile strengths.
CFM is particularly suitable for compression moulded electrical and non-electrical laminates as well as for pultrusion and infusion or injection processes (e.g. RTM, S-RIM or Matched Die Molding). CFM products contain an insoluble binder for unsaturated polyester, epoxy and polyurethane compatibility in unfilled or filled resin systems.
In certain applications, 3B CFM also shows good compatibility with polyurethane foams.
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The most common use of magnets in the plastic industry is magnetic separators.
Main applications:
Traps metals before they reach the extruder
Filters metals from raw material.
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A tube magnet is constructed of cylindrical permanent magnets contained within a stainless steel tube. The magnetic elements can be ferrite or ‘Rare Earth’. Rare Earth magnets develop very high magnetic field strengths and gradients enabling the extraction of the very smallest particle of iron or rust. Tube Magnets are very versatile and suitable for use with either dry or wet materials. A Tube Magnet can be used singly for quality control purposes or in multiples within a process, or built into magnetic traps for liquid lines or into grates for dry processes.
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| ... products without technical information |
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