Where to Buy Double-clad Fibers
Double-clad fibers are active optical fibers with an additional pump cladding, accepting pump radiation with much lower beam quality. They are widely used for high-power fiber amplifiers and lasers.

More general products: rare-earth-doped fibers, specialty fibers
Related products: triple-clad fibers, large mode area fibers, fiber optics
Related product category: fiber optics
E | Learn before you buy! See our encyclopedia article:Double-clad Fibers Related articles: rare-earth-doped fibers, photonic crystal fibers, high-power fiber lasers and amplifiers, power scaling of lasers, brightness, cladding mode strippers |
Check List for Double-clad Fibers
- What kind of laser-active dopant do you need – Er3+, Yb3+, Nd3+, Tm3+ or anything else?
- Can it be a kind of silica fiber, or do you require some specialty glass, e.g. a fluoride fiber?
- What doping concentration do you need? Alternatively, manufacturers often specify the absorption at some given wavelength(s) – for the core or for the pump cladding.
- What is the fiber's quality? Is the power conversion efficiency reduced by quenching effects and the like?
- What is the effective mode area or mode radius of the fiber core? (There are special large mode area fibers.)
- (For single-mode fibers, the core diameter and numerical aperture are usually not relevant, if the mode area is known.)
- (The propagation losses are usually not very relevant, except if an unusually long length of fiber is used.)
- What is the diameter and numerical aperture of the pump cladding?
- Is the pump cladding circular, elliptical or D-shaped?
- How tight bending is possible, before the bend losses become too high?
- How much optical average power can the fiber tolerate? (Additional properties at the launch end may still occur if too much power gets to the coating.)
- What is the outer fiber diameter with and without protective coating?
- What is the coating material? Is it a standard material which can be removed with a usual fiber stripper?
- Can the fiber be cleaved with a standard fiber cleaver? (Fluoride fibers, for example, have quite different mechanical properties than silica fibers.)
- Are there fiber couplers available for combining pump and signal inputs, or for separate pump and signal at the end?
Also have a look at the check lists for rare-earth-doped fibers and for general fibers.
In case that you need additional advice, consultancy from RP Photonics may be the solution.
16 suppliers for double-clad fibers are listed in the RP Photonics Buyer's Guide. Both manufacturers and distributors can be registered.
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Suppliers with Ad Package presenting their product descriptions | |
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Company | Product Description |
![]() Solutions for Innovators Blokken 84 3460 Birkerød Denmark ISO 9001:2015 | ![]() Our ytterbium-doped double-clad fibers offer the largest single-mode cores in the world. The high numerical aperture for the pump core/inner cladding lets you pump with high efficiency, even with inexpensive or high-power broad-area emitting pumps. The single-mode signal travels in the large mode area to give high power levels and prevents nonlinearities. Need it packaged? Choose one of our aeroGAIN-ROD or aeroGAIN-BASE modules. |
![]() 34, Rue de la Croix de Fer 78100 Saint Germain-en-Laye France | ![]() iXblue offers a wide range of specialty optical fibers for lasers and amplifiers. We master erbium, erbium/ytterbium, ytterbium, thulium, holmium, thulium/holmium, neodymium, dysprosium, and phosphorous gain media. PM version are available, and Large Mode Area (LMA) or Very Large Mode Area (VLMA) versions as well. Depending of the requirement, single clad fibers are available for core pumping, double clad fibers for cladding pumping. Triple clad and all-glass structures are also available. |
![]() Leader in fluoride glass and optical fiber technology Rue Gabriel Voisin Campus de Ker Lann 35170 Bruz, Brittany France | ![]() LVF offers a range of rare-earth doped double cladding single-mode and multimode fluoride fibers for high power laser generation. Most of them exhibit a double D-shape on the first cladding in order to improve the pump absorption. Undoped double cladding single-mode and multimode fluoride fibers are also available. |
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All Suppliers | |
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From your country: | |
5100 Patrick Henry Drive Santa Clara, CA 95054 United States | |
7 Airport Park Road East Granby, CT 06026 United States | |
From America: | |
361 Montpellier Blvd Saint-Laurent, QC H4N 2G6 Canada | www.castoroptics.com E-mail: |
2700, Jean-Perrin, Suite 121 Quebec G2C 1S9 Canada | |
Outside America: | |
Advanced Technology Innovation Centre Loughborough University Science and Enterprise Parks 5 Oakwood Drive Loughborough LE11 3QF United Kingdom | www.eluxi.co.uk E-mail: |
University Parkway Chilworth Science Park Southampton SO16 7QQ United Kingdom | www.fibercore.com E-mail: |
Charlottenhuette 40 57080 Siegen Germany | www.fosoptics.de E-mail: |
Marunouchi Nakadori Bldg. 2–3, Marunouchi 2-chome Chiyodaku, Tokyo 100–8322 Japan | |
27th floor, Bank of East Asia Harbour View Centre 56 Gloucester Road, Wan Chai Hong Kong | www.gehtinternational.com E-mail: |
Hans-Knöll-Str. 6 07745 Jena, Germany Germany | |
![]() 34, Rue de la Croix de Fer 78100 Saint Germain-en-Laye France | ![]() iXblue offers a wide range of specialty optical fibers for lasers and amplifiers. We master erbium, erbium/ytterbium, ytterbium, thulium, holmium, thulium/holmium, neodymium, dysprosium, and phosphorous gain media. PM version are available, and Large Mode Area (LMA) or Very Large Mode Area (VLMA) versions as well. Depending of the requirement, single clad fibers are available for core pumping, double clad fibers for cladding pumping. Triple clad and all-glass structures are also available. |
![]() Leader in fluoride glass and optical fiber technology Rue Gabriel Voisin Campus de Ker Lann 35170 Bruz, Brittany France | ![]() LVF offers a range of rare-earth doped double cladding single-mode and multimode fluoride fibers for high power laser generation. Most of them exhibit a double D-shape on the first cladding in order to improve the pump absorption. Undoped double cladding single-mode and multimode fluoride fibers are also available. |
![]() Solutions for Innovators Blokken 84 3460 Birkerød Denmark ISO 9001:2015 | ![]() Our ytterbium-doped double-clad fibers offer the largest single-mode cores in the world. The high numerical aperture for the pump core/inner cladding lets you pump with high efficiency, even with inexpensive or high-power broad-area emitting pumps. The single-mode signal travels in the large mode area to give high power levels and prevents nonlinearities. Need it packaged? Choose one of our aeroGAIN-ROD or aeroGAIN-BASE modules. |
Kokoojatie 5 79100 Leppävirta Finland | www.oplatek.com E-mail: |
RISE Research Institutes of Sweden Fibervagen 2–6 824 50 Hudiksvall Sweden | |
10 Bukit Batok Crescent #07–02 The Spire Singapore 658079 | |
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