At MY Polymers – The Low Refractive Index Company, we do our best to be responsive to our customers.

Any technical issue which arises either before or after you get our materials and start working with them can be discussed directly with our technical staff. 

Simply press the red button marked ASK A TECHNICAL QUESTION and you’ll be asked to describe the issue at hand.

Some technical questions and issues tend to appear more frequently than others.





Recoating materials

Our recoating materials are used in the construction of fiber lasers. Splices that are created during the fiber laser assembly process, have to be recoated. Likewise, each component used in the assembly of a fiber laser has to be recoated and encapsulated by a recoating material.

Currently, the most common specialty optical fibers (both active and passive) use primary coatings with an index of 1.36 (e.g. OF-136). Recoating materials with the same low index of refraction, 1.36, are very common in recoating applications. Typically, 1.36 index materials are used for recoating splices, Pump Power Combiners, Couplers, and FBG (Fiber Bragg Gratings).

Our recoating materials were designed to be used on recoaters and in manual recoating. Viscosity in the range of roughly 2000 cps is ideally suited to recoaters, resulting in high-quality smooth molds.

Our low index recoating materials are dedicated for recoating. This focus enables optimization of adhesion (higher adhesion than primary coatings) and modulus (recoatings are more flexible, allowing better performance under thermal cycling).

For Cladding Light Strippers (Called also Cladding Power Strippers), a higher index is required, because of the idea to strip the cladding modes and get rid of them. During the last few years, we see an escalating trend to use Cascaded Cladding Light Strippers. Cascaded CLSs enables to distribute the power more evenly along the whole length of a CLS device. This prevents the formation of a high-temperature hot spot. Instead, multiple hot spots with significantly lower temperatures are formed, enabling the whole device to remain cooler.

Tower + OF136 OF140Nsm

Optical Fiber Primary Coatings (Cladding Resins)

MY Polymers Optical Fiber (OF) Coatings are used as a first (primary) coating in specialty optical fibers. Distinguished by their carefully balanced combination of high adhesion to the core, and high modulus, these UV cured coatings are setting new standards. Our OF-136 (Index=1.36) is used by the majority of specialty optical fibers manufacturers. This product, like some other members of the OF family, includes a proprietary adhesion promoter that dramatically improves adhesion under wet conditions. Our adhesion promoter was designed to be relatively stable, compared to commercially available adhesion promoters. One major application of OF-136 is for active Erbium-Doped fibers used in both Fiber Lasers and EDFA Optical Amplifiers.

The disruptive OF-133-V3 (index 1.33) enables a breakthrough Numerical Aperture of 0.6. The high NA can significantly increase the efficiency of fiber lasers and optical amplifiers. Pioneering companies are already at work, exploring the advantages of this exceptional primary coating. Its close relative, OF-134-V2, couples a low index of 1.34 with a relatively high modulus of 17 MPa. The higher modulus, compared to OF-133, is intended to enable a smoother transition to the ultra-low index OF coatings.

For mechanically demanding applications, customers choose the high modulus offered by OF-138 (index 1.38) and OF-140-N. These tough coatings are preferred for fibers that are subjected to high mechanical stresses. OF-HC-14 is our only secondary hard coat. The adhesion of OF-HC-14 to our primary low index coatings is about an order of magnitude higher, compared to similar commercially available hard coats.

Materials for Optical Communications Components

Adhesives, Coatings, Sealants, Potting, and Encapsulations Materials.
MY Polymers offers a wide range of materials for Optical Communications and networking. We continuously adapt our products to the fast-changing requirements of the Optical Communications industry. Our products can be found in EDFA optical amplifiers, in Optical Transceivers, PLC Splitters, V-Groove Arrays, and Integrated Photonic Circuits.

The Dual Cure (UV or Heat or Both) DC Product Line.
Our Dual Cure (DC) products find a growing number of applications as adhesives, coatings, and sealants. All our Dual Cure materials are one component materials. They are cured by either UV radiation, Heat, or a combination of both. This feature enables curing in partially or fully shaded regions of the device.
The DC line includes both flexible and rigid products with a refractive index from 1.33 to 1.50, with relatively big selection close to the index of silica. These include DC-1455 (flexible, index=1.448 at 950 nm) and DC-1455-HM and (Rigid, index=1.451) The DC line also includes high bond strength products like DC-150 (flexible) and DC-1473 (rigid).

Typical applications include:
V-Groove Array: Bonding & cladding the fibers inside the V-Grooves, fixing the fibers externally. For bonding inside the V-grooves array, if a low index is preferred, customers can use DC-136-EA, if not customers can use DC-1455 or DC-150. If a rigid adhesive is preferred, use DC-1455-HM or DC-1473-HM. For fixing the input/output fibers use the versatile DC-150, (or the UV cured MY-150). And for rigid fixing, use DC-1455, DC-1475, (or the UV cured MY-1473).

Sealant for an Optical Component Package.
The entry points of an optical fiber into the external package of a component can be sealed using one of our Dual Cured products, such as DC-1455 (when important to keep the index just below that of the silica fiber core) or DC-150. Both are very flexible, and this reduces the stress during thermal cycling or after a thermal shock. This enables the higher reliability of the device. The Dual Curing feature can be used for an initial fixing of the external side of the seal. 
Afterward, heat curing is used to cure the hidden part of the seal.