Making Spectroscopy Brighter

PATCHCORDS BIFURCATED OPTICAL FIBERS TRANSMISSION PROBES REFLECTANCE PROBES

OPTICAL FIBERS / PROBES

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OPTICAL FIBERS AND PROBES

Optical Fibers Using optical fibers to guide light ensures high transmission and flexibility in spectroscopy measurements, as we can easily connect different components to setup a suitable solution for each application without complex optical designs. Sarspec is specialized in high quality optical fibers for the best results. All Sarspec fiber-optic cables have numerical aperture (N.A.) of 0.22 and uses standard SMA 905 connectors for easy coupling, without the need of any optical alignment with spectrometers, light sources and sampling accessories. It’s important to select some key specifications in order to get the right optical fiber namely: wavelength range, core diameter, length, jacketing and type (patch cord or bifurcated). Even though the information focus on standard products, it’s important to mention that as a manufacturer Sarspec can build specific solutions that matches customers requirements.

Optical fibers architecture Core Made of pure fused silica, it’s the medium for light transmission. Depending on the OH (Hydroxyl ions) content present on the fiber, there are two specific wavelength range regions: high-OH content fibers are used in the UV/Vis region and low-OH content fibers are used in the Vis/ NIR region. For UV applications it’s important to use solarization resistant fibers and for that all Sarspec optical fibers for the UV are solarization resistant offering more durability and wider wavelength range. The core diameter is crucial for the best performance on each configuration, larger diameter means more light into and out of the sample. For applications such as Fluorescence, Raman and Reflectance (for low reflectivity samples) we advice large core optical fibers. Sarspec has available the following core diameters: 200, 400, 600 and 1000 µm.

Cladding Fluorine doped silica layer, surrounding the core and with lower refractive index than the core, confines the light in the core of the fiber by total internal reflection at the boundary between the two.

Buffer The buffer is used mainly for adding mechanical resistance to the optical fiber protecting it from physical damage. As standard Sarspec’s use silicone as buffer for the best resistance at low and high temperatures and to solvents

Jacket The jacket is the external layer of the optical fiber and it’s function is to protect the fiber and ensure strain relief. For optical fiber jacketing Sarspec can supply two options: kevlar reinforced PVC monocoil for standard non harsh environments or Stainless Steel for a superior degree of fiber protection.

SMA 905 Connector Sarspec uses SMA 905 connectors in all instrumentation and fiber-optic cables for coupling the different components without the need of any optical alignment.

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OPTICAL FIBERS AND PROBES

Patch cords We offer a wide range of multi-mode fiber-optic patch cords, in a variety of core diameters and lengths. This type of cables are used to interconnect all our equipments, having at both ends the universal optical connector, SMA 905. It is also possible to choose the transmission spectral region, UV/Vis or Vis/NIR, and the type of protection Jacket, PVC or steel.

Bifurcated Bifurcated fibers are mainly used to illuminate two samples with one light source assuring that equal illumination is delivered to both or collect light for two spectrometers with different wavelength ranges / resolutions / sensitivities / acquisition speeds. Bifurcated bundles use two optical fibers with pre defined core diameter and wavelength range (equal or different) with two sections in one end and one section in the other end where they are put side by side using the same SMA 905 connector. General Specifications UV/Vis

Vis/NIR

Core material

Pure Fused Silica

OH content

High-OH

Low-OH

Cladding

Fluorine doped silica

Wavelength Range

180-1200 nm

300-2400 nm

Core diameters

200, 400, 600 and 1000 µm

Length

50, 200 cm or user defined

Jacket

kevlar reinforced PVC or stainless steel

Available types

patch cord or bifurcated

Connector

SMA 905

Temperature range

-20º to 60º C for PVC and -65º to 250º C for stainless steel

Fiber external diameter

3.8 mm for PVC and 5.0 mm for stainless steel Order Info

Example: OF-UV-600-200

Patch cord, 180-1200 nm, 600 µm core, 200 cm length and PVC jacket CORE DIAMETER

TYPE

JACKET MATERIAL

200: 200 µm 400: 400 µm 600: 600 µm 1000: 1000 µm

OF: PATCHCORD BOF: BIFURCATED

BLANK: PVC SS: S. STEEL

RP - WWW - CCC - LLL - JJ WL RANGE

LENGTH

UV: 180-1200 nm VIS: 300-2400 nm

050: 50 cm 200: 200 cm XXX: XXX cm

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OPTICAL FIBERS AND PROBES

Optical fiber probes Sarspec offers a full range of Probes for Reflectance and Transmittance/Absorbance measurements in surfaces, powders, solids, solutions, etc. Our probes are designed considering the highest standards and precision for the most reliable analytical results being fully built in stainless steel for maximum robustness, allowing to work in two different wavelength ranges, UV/Vis (1801200 nm) or Vis/NIR (300-2400 nm). The typical design consists of a ‘Y’ shaped probe where one section is connected to the light source for sample illumination and the other section is connected to the spectrometer for sample characterization. Sarspec customizes probes for specific applications either in length, temperature, pressure and chemical resistance, specific threads for reactor coupling, among others.

Transmission Probes • Built for Absorbance and Transmittance •

measurements in liquid samples Great solution for real time reaction monitoring

• Available pathlengths of 2, 5 and 10 mm • Probe and jacket in stainless steel for maximum resistance

Sarspec’s transmission probes are the right choice for immerse Transmittance/Absorbance measurements. This solution is ideal for measurements in reaction vessels in real time mode. It’s quite useful to use Lightscan software in Kinetics mode to monitor the Absorbance/Transmittance in specific wavelengths. Transmission probes can be purchased as a full pack as Absorbance Spec Pack Probe where all required instrumentation is included and optimized for the best results. Transmission probes are built using two fibers, one for illumination and the other for collection. Illumination happens with a collimated beam through the sample onto a reflecting mirror, the reflected light beam passes back through the sample and is coupled into the collection fiber for connection to the spectrometer/detector. The full configuration requires the selection of wavelength range and core diameter of the optical fibers. The probe and jacket are made of stainless steel for maximum robustness and durability. Different path lengths are available just by changing the tip of the probe. Available path lengths are 2, 5 and 10 mm.

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OPTICAL FIBERS AND PROBES

Parameter

Value

Wavelength ranges

180-1200 nm (UV/Vis) or 300-2400 nm (Vis/NIR)

Fiber core diameters

400 and 600 µm

Optical pathlengths

2, 5 and 10 mm

Probe length

150 mm

Probe diameter

6.35 mm

Fiber jacket

5 mm stainless steel

Probe material

316 stainless steel

Operating temperature

up to 200º C

Connectors

SMA 905 Order Info

Example: TP-UV- 400-100

Transmission Probe, UV range, 400 µm core diameter, 100cm length, stainless steel jacket and 10 mm pathlength

Transmission Probe Tip 2 mm

TIP-2 (optional)

Transmission Probe Tip 5 mm

TIP-5 (optional)

Transmission Probe Tip 10 mm

TIP-10 (included)

TYPE TRANSMISSION PROBE

CORE DIAMETER

JACKET MATERIAL

400: 400 µm 600: 600 µm

BLANK: S. STEEL PVC: PVC

TP - WWW - CCC - LLL - JJ WL RANGE

LENGTH

UV: 180-1200 nm VIS: 300-2400 nm

200: 200 cm XXX: XXX cm

Typical Setup for Transmission Probes: Absorbance SPEC Pack Probe

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OPTICAL FIBERS AND PROBES

Reflection Probes • Built for Reflectance measurements • Six illumination fibers around one collection fiber • Specular and Diffuse Reflectance measurements when configuration as standard combined with the probe holder (PH) • Available in the UV/Vis or Vis/NIR wavelength ranges A reflection probe is used to get spectral information of specular or diffuse reflectance from a surface, fluorescence from solid surfaces, or backscattering and fluorescence in solutions and powders. Consists of a tight bundle of 7 optical fibers in a stainless steel ferrule - 6 illumination fibers around 1 collection fiber. A light source is coupled into the 6 illumination fibers and carried to the probe end. The surface will selectively reflect light back into the central fiber. This fiber with SMA 905 connector is coupled to a spectrometer. Higher core diameter fibers transmit more intensity from the light source and increases the collected signal. Reflection probes are available in two wavelength ranges: UV/Vis and Vis/NIR. Sarspec’s probe holders are created to secure Reflection Probes, positioning it with an angle of incidence (A.I.) of 0º or 45º. These positions are ideal for Specular and Diffuse Reflection measurements making this accessory a simple solution for extra flexibility when using reflection probes. The probe holder is made of anodized aluminium with 6.35 mm positioning holes and fixing screws granting the same distance to the sample between measurements.

Adjusting Screws

Specular Reflectance

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Diffuse Reflectance

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OPTICAL FIBERS AND PROBES

Parameter

Value

Wavelength ranges

180-1200 nm (UV/Vis) or 300-2400 nm (Vis/NIR)

Fiber core diameters

400 and 600 µm

Probe length

100 mm

Probe diameter

6.35 mm

Fiber jacket

5 mm stainless steel

Probe material

316 stainless steel

Operating temperature

up to 200º C

Connectors

SMA 905 Order Info

Example: RP-UV- 400-100

Reflection Probe, UV range, 400 µm core diameter, 100 cm length and stainless steel jacket

Probe Holder

PH

TYPE REFLECTION PROBE

CORE DIAMETER

JACKET MATERIAL

400: 400 µm 600: 600 µm

BLANK: S. STEEL PVC: PVC

RP - WWW - CCC - LLL - JJ WL RANGE

LENGTH

UV: 180-1200 nm VIS: 300-2400 nm

200: 200 cm XXX: XXX cm

Typical Setup for Reflection Probes: Reflectance SPEC Pack Vis/NIR

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SARSPEC, LDA RUA 28 DE JANEIRO 350 B2 4400-335 VILA NOVA DE GAIA TEL. +351 223 709 107 [email protected] WWW.SARSPEC.COM