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Multi-Mode Fibers

art photonics' Copper-alloy Coated Silica Fibers are engineered to deliver exceptional optical performance under extreme environmental conditions, making them an ideal choice for demanding industrial, medical, and scientific applications. These fibers combine the optical clarity and wide transmission range of silica fibers ...

Specifications

Core Diameter: 9 um
Wavelength Range: 220 – 2400 nm
Cable Length: 1 m
Fiber Core Material: Silica
Available Fiber Core Diameters: 9, 50, 100, 200, 400, 600 µm
art photonics’ Hollow Glass Waveguides (HWG Series) are advanced fiber solutions designed for efficient, low-loss transmission of infrared (IR) radiation across the 2–18 μm spectral range. Featuring a unique hollow silica glass core, HWG fibers eliminate Fresnel reflection losses at their terminations, ensuring ...

Specifications

Core Diameter: 500 um
Wavelength Range: 2000 – 18000 nm
Cable Length: 0.5 m
Fiber Core Material: Not Specified
Glass Capillary: SiO2
Armadillo’s plastic-clad silica fibers ensure high transmission values across UV to NIR wavelengths, catering to applications ranging from remote illumination to high-power laser delivery and spectroscopy. Our ArmD® UV-SC and NIR-SC fibers, excelling in UV and MIR transmission, provide full bio-compatibility and cost-effective ...

Specifications

Wavelength Range: 300 – 2200 nm
Fiber Core Material: Silica
Wavelength / Spectral Range: 350 – 2200 nm
Numerical Aperture (NA): 0,40 ± 0,02
Operating Temperature: -40 to +150 °C
art photonics’ Copper-alloy Coated Silica Fibers are the optimal solution for applications in high temperature, vacuum and harsh environment conditions. Cu-alloy coated fibers have all benefits of silica fibers. Additional significant advantages include a superior mechanical strength and better fatigue resistance compared to ...

Specifications

Core Diameter: 9 um
Wavelength Range: 180 – 2400 nm
Cable Length: Not Specified
Fiber Core Material: Silica
Coating Material: Copper-alloy
art photonics' Metal-Coated Silica Fibers are ideally suited for use in high temperature, vacuum and harsh chemical environments. This is due to the strong mechanical adhesion of the metal directly to the silica cladding during drawing process.

Specifications

Core Diameter: 9 um
Wavelength Range: 180 – 2500 nm
Cable Length: 50 m
Fiber Core Material: Silica
Coating Material: Cu-alloy
Chalcogenide As-S glass fiber is capable of transmitting IR radiation within the spectral range of 1.1 - 6.5μm. High-performance CIR (Core/Clad Infrared) fibers are manufactured through a drawing process, featuring core diameters ranging from 8µm to 500µm. These fibers exhibit exceptional mechanical strength and ...

Specifications

Core Diameter: 8 um
Wavelength Range: 1100 – 6500 nm
Cable Length: 0.1 m
Fiber Core Material: Chalcogenide Glass
Available Core Diameters: 8, 50, 250, 340, 500 μm
art photonics’ Al Coated Silica Fibers are the optimal solution for applications in high temperature, vacuum and harsh environment conditions. Al coated fibers have all benefits of silica fibers. Additional significant advantages include a superior mechanical strength and better fatigue resistance compared to polymer coated ...

Specifications

Core Diameter: 9 um
Wavelength Range: 220 – 2400 nm
Cable Length: 1 m
Fiber Core Material: Silica
Available Fiber Core Diameters: 9, 50, 100, 200, 400, 600 µm
art photonics developed a volume production technology of a unique product – Core / Clad Polycrystalline Infra-Red (PIR-) fibers transparent over a broad spectral range 3 – 17 μm. Highest performance PIR core/clad fiber are extruded with core diameters span from 240µm to 860µm. Continuously ...

Specifications

Core Diameter: 240 um
Wavelength Range: 3000 – 17000 nm
Cable Length: 15 m
Fiber Core Material: Not Specified
Wavelength Range: 3 - 17 μm
Armadillo’s high quality ArmD® UV and ArmD® NIR fibers showcase outstanding performance and transmission across a wide spectrum, from deep UV to MIR. Explore an array of jacket types and sizes, including customizable options designed to match your exact specifications. 

Specifications

Wavelength Range: 190 – 1200 nm
Fiber Core Material: Silica
Wavelength Range (ArmD™ UV): 190 – 1200 nm
Wavelength Range (ArmD™ WF): 300 – 2400 nm
Numerical Aperture (NA) Low: 0,12 ± 0,02
Armadillo’s high quality ArmD® UV and ArmD® NIR fibers showcase outstanding performance and transmission across a wide spectrum, from deep UV to MIR. Explore an array of jacket types and sizes, including customizable options designed to match your exact specifications. 

Specifications

Wavelength Range: 300 – 2400 nm
Fiber Core Material: Silica
Wavelength Range (ArmD™ UV): 190 – 1200 nm
Wavelength Range (ArmD™ WF): 300 – 2400 nm
Numerical Aperture (Low): 0,12 ± 0,02
Introducing ArmD® Broadband by Armadillo: A remarkably low-loss solution optimized for wavelengths ranging from 200 nm to 2000 nm. This innovative fiber harnesses the combined properties of UV and NIR fibers, tailored for a spectrum of technical applications, including broad spectroscopy and precision Astronomy Instruments.

Specifications

Wavelength Range: 200 – 2000 nm
Fiber Core Material: Silica
Wavelength / Spectral Range: ArmD™ UVWFS: 200 – 2200 nm, ArmD™ WFNS: 300 - 2400 nm
Numerical Aperture (NA): 0,12 ± 0,02 | 0,15 ± 0,02 | 0,22 ± 0,02 | 0,26 ± 0,02 | 0,28 ± 0,02 or customised
Operating Temperature: -190 to +350 °C
ArmD® UV-HC and ArmD® NIR-HC hard polymer-clad fibers offer high numerical apertures to suit a broad range of applications, from remote illumination to photodynamic therapy. This high-quality fiber is a cost-effective alternative to silica/silica fibers. Explore our range of jacket types and sizes, including customizable options ...

Specifications

Wavelength Range: 350 – 2200 nm
Fiber Core Material: Silica
Wavelength / Spectral Range: 350 – 2200 nm
Numerical Aperture (NA): 0,37 ± 0,02 | 0,48 ± 0,02 | 0.50±0,02 | 0,52±0,02 | 0,57±0,02 | 0,62±0,02
Operating Temperature: -40 to +150 °C
Armadillo’s angular core silica optical fibers exhibit exceptional performance and transmission to ArmD® UV/NIR fibers with circular core geometry. Their excellent image scrambling and minimal focal ratio degradation make them ideal for astronomy applications. When paired with diode lasers producing square-shaped outputs, these ...

Specifications

Wavelength Range: 300 – 2400 nm
Fiber Core Material: Silica
Wavelength / Spectral Range: ArmD™ UV NCC: 190 – 1200 nm
Wavelength / Spectral Range: ArmD™ WF NCC: 300 – 2400 nm
Numerical Aperture (NA) Low: 0,16 ± 0,02
Aluminum Coated Fibers from Waveguide Technologies, Inc. are designed for a wide temperature range (-269°C to +400°C). Fibers are available with high OH content for UV/VIS and low OH content for VIS/IR wavelength operation. An additional product line features deep UV operation with excellent solarisation stability up to ...

Specifications

Core Diameter: 50 um
Wavelength Range: 215 – 2100 nm
Cable Length: 1 m
Fiber Core Material: Silica
Coating Material: Aluminum
Gold Coated Fibers from Waveguide Technologies, Inc. are designed to achieve the widest temperature range (-269°C to +700°C) of any optical fiber currently on the market. Fibers are available for operation in UV/VIS or VIS/IR wavelength ranges. Custom fiber sizes are available upon request.

Specifications

Core Diameter: 50 um
Wavelength Range: 215 – 2100 nm
Cable Length: 1 m
Fiber Core Material: Silica
Coating Material:: Gold
Quartz Fiber XOP-1102/1103/1104/1105 XOP-1102-1105 series quartz fibers are of a concentric cylindrical structure with a quartz core and a Fluorine-doped quartz cladding and coated with resin materials to enhance fiber strength. An additional sheath layer can be added to protect the fiber. XOP-1102-1105 fibers can ...

Specifications

Core Diameter: 200 um
Wavelength Range: 200 – 2200 nm
Cable Length: 0.05 m
Fiber Core Material: Silica
Model: XOP-1102/1103/1104/1105/1131/1122
The Business Unit Fiber Optics is a leading producer of high-quality multimode fibers with graded index profile used for data transmission. Based on this expertise LEONI Fiber Optics offers an extended product range of graded-index fibers for laser beam transmission applications.    The light rays within graded-index ...

Specifications

Core Diameter: 50 um
Wavelength Range: 850 – 1300 nm
Cable Length: Not Specified
Fiber Core Material: Silica
Fiber Length: Custom
The fiber is expertly protected with a 99.99% 24 kt Gold coating, offering unparalleled performance in demanding applications. This gold coating extends the fiber's usability across a broader temperature range compared to conventional polymer coatings. Furthermore, it provides exceptional protection against chemical corrosion and ...

Specifications

Core Diameter: 50 um
Wavelength Range: 215 – 2100 nm
Cable Length: 5 m
Fiber Core Material: Silica
Gold Coating Purity: 99.99 % 24 kt
heracle features pure fused silica step index multimode fibers, optimised for applications in the UV/VIS and VIS/IR wavelengths. Optional solarization resistant performance for UV wavelength region is available. The fiber is protected with Aluminum coating. Aluminum coatings not only enable the fiber to be used in applications of a ...

Specifications

Core Diameter: 100 um
Wavelength Range: 200 – 2400 nm
Cable Length: 100 m
Fiber Core Material: Silica
Core Diameter: 50 - 400 nm
The fibers feature a Germanium doped fused silica core with graded index core profile. They are designed to work at the optical wavelengths 850 nm and/or 1300 nm for data communication. The metalized optical fiber is supplied with either 24 kt Gold or Aluminum coating. These types of coatings allow for termination of the fiber ...

Specifications

Core Diameter: 50 um
Wavelength Range: 850 – 1300 nm
Cable Length: 100 m
Fiber Core Material: Silica
Core Diameter: 50 or 62.5 µm

Frequently Asked Questions

While single-mode fibers can only support one mode, multimode fibers can propagate thousands of modes due to the larger size of the core. The number of modes supported by an optical fiber is dependent on the radius of the core, the wavelength, and the index of refraction of the core and the cladding materials.

Step index optical fibers are characterized by a uniform distribution of the core refractive index. This means that the refractive index is the same everywhere inside the core. On the other hand, graded index optical fibers are characterized by a core whose refractive index varies with radial position. For a graded index fiber, the refractive index of the core tends to be higher near the center and smaller radially outward.

There are many ways to think about optical modes. One way is to think of a mode as one possible solution of the wave equation in a waveguide, fiber, or free space. It is the spatiotemporal distribution/propagation of the optical (electromagnetic) wave inside the fiber. A single mode corresponds to one such solution with a defined periodicity (wavelength) and phase velocity. Multimode optical fibers are designed in such a way that multiple optical modes can simultaneously be propagated inside the fiber without deterioration.

Multimode fibers are characterized by a wide core and an overall bigger cross-section than single-mode fibers. This makes them easier to align with other devices like lasers and less likely to suffer from breakage. Additionally, connectors and attachments to multimode fiber are cheaper as they are easier to fabricate. Multimode fibers are also ideal for short-distance communication networks.

Yes, a change in temperature can induce small variations in the index of refraction of multimode temperature which could cause undesired effects such as power loss or birefringence. However, many multimode fibers are designed to operate at temperatures as high as 700 degrees Celsius.

The core diameters of multimode fibers can range from 50 µm to 500 µm or more. In general, multimode fibers with larger core diameters can sustain higher number of modes.

Multi-Mode Fibers: Versatile Solutions for Short to Medium Distance Data Transmission

Multi-mode fibers are designed to carry multiple light modes simultaneously, making them highly suitable for short to medium distance applications such as local area networks (LANs), data centers, and industrial automation. These fibers typically have larger core diameters, commonly 50 or 62.5 microns, allowing multiple modes to propagate, which simplifies coupling with light sources like LEDs and VCSELs.

FindLight offers a variety of multi-mode fiber products, including radiation-hard multimode fibers that maintain performance even in high-radiation environments such as nuclear facilities, aerospace, or medical equipment. These fibers ensure signal stability and integrity despite harsh conditions.

Another notable product is the power delivery silica core fiber, designed for applications involving high-power laser transmission. These fibers offer excellent optical properties like low attenuation and high damage thresholds, enabling efficient laser energy delivery in industrial cutting, welding, or medical laser systems.

Multi-mode fibers are valued for their cost-effectiveness and ease of installation, especially in environments where ultra-long distances and ultra-high bandwidths are not necessary. They support high data rates over distances up to a few kilometers, making them ideal for intra-building communication.

Choosing the right multi-mode fiber involves considering core size, numerical aperture, attenuation, and environmental factors such as temperature range and mechanical stress tolerance. FindLight’s broad catalog provides fibers optimized for different wavelengths, bandwidths, and operational conditions.

Did You know?

Multimode fiber is an optical fiber that is designed to carry multiple light modes, each at a slightly different reflection angle within the optical fiber core. Multimode fiber gives you high bandwidth at high speeds over short to medium distances. Light waves are dispersed into numerous paths, or modes, as they travel through the cable's core typically at 850 or 1300nm. Typical multimode fiber core diameters are 50, 62.5, 100um. As the number of light reflections passing through the core increases, this leads to high dispersion and attenuation rate and eventually the quality of the signal is reduced over long distances. Multimode fibers are typically used for short distances, e.g. for audio/video applications in LANs. RF broadband signals, which cable companies commonly use, cannot be transmitted over multimode fibers.