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
INFO@SARSPEC.COM
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