Buying Double-clad Fibers
Double-clad fibers are active optical fibers with an additional pump cladding that accepts pump radiation with low beam quality. They are widely used in high-power fiber amplifiers and lasers, enabling efficient energy transfer from the pump light to the highly coherent laser light. They are thus acting as brightness converters.
Making Good Purchase Decisions
RP Photonics helps to not only to find all relevant suppliers, but also to make good purchase decisions:
Learning Resources
With its comprehensive resources, RP Photonics helps you to well prepare purchase decisions:
Aspects to Consider Before Buying
Some aspects to consider before buying double-clad fibers: core and cladding diameter, cladding shape, numerical aperture of core and cladding, type of density of laser-active dopant, pump absorption efficiency, power handling capacity, protective coating, thermal stability, availability of spectroscopic data, badge-to-badge consistency.
For responsible purchase decisions, we recommend applying good practices.
Find Suppliers for Double-clad Fibers
16 suppliers for double-clad fibers are listed in the RP Photonics Buyer's Guide, out of which 4 present their product descriptions. Both manufacturers and distributors can be registered.
| Suppliers with Advertising Package presenting their product descriptions | |
|---|---|
 Leader in fluoride glass and optical fiber technology Le Verre FluoréRue Gabriel Voisin Campus de Ker Lann 35170 Bruz, Brittany France See us at SPIE Photonics West 2025 in San Francisco, January 25–30 (booth 2066)! |  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 NKT PhotonicsBregnerødvej 144 3460 Birkerød Denmark See us at SPIE Photonics West 2025 in San Francisco, January 25–30 (booth 3401)! |  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 See us at SPIE Photonics West 2025 in San Francisco, January 25–30 (booth 5039)! |  Exail (formerly 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. |
 Innovation in every fiber Fibercore LimitedUniversity Parkway Chilworth Science Park Southampton SO16 7QQ United Kingdom See us at SPIE Photonics West 2025 in San Francisco, January 25–30 (booth 5123)! |  Fibercore offers a range of double-clad fibers including low index double-clad passive fiber providing high power handling capability with 1060 nm and 1550 nm variants, as well as all-silica double-clad passive fiber which combines both single-mode and multimode characteristics providing outstanding power handling over a full range of environmental conditions. |
| Other Suppliers | |
|---|---|
| Castor Optics Inc. Canada | |
| Coherent Corp. United States | |
| CorActive High-Tech Inc. Canada | |
| ELUXI Ltd. United Kingdom | |
| Everfoton China | |
| FOS Inon Optics GmbH Germany | |
| Furukawa Electric Japan | |
| GEHT International Ltd Hong Kong | |
| heracle GmbH Germany | |
| Oplatek Group Oy Finland | |
| RISE Research Institutes of Sweden Sweden | |
| Sintec Optronics Pte Ltd (HQ) Singapore | |
