FAQ related to Optical Fibers
Frequently Asked Questions
The frequently asked questions for optical fibers are as follows.
Is there any limit to the degree of bend in an optical fiber?
The minimum allowable bend radius of optical fibers is generally 30 mm. Therefore, bending an optical fiber to a radius of less than 30 mm should be avoided. Sumitomo Electric offers bend insensitive fiber products such as PureBand™-Plus, PureBand™-R, PureBand™-R[LL], and PureAccess™, which have a minimum allowable bend radius of 10 mm. Additionally, Sumitomo Electric has developed a 7.5 mm bend-radius SM fiber called PureAccess™[A2], which represents an even smaller bend radius.
What is the proper way to transport and store the fiber bobbins ?
Please refer the following illustrations.
Are the Sumitomo Electric optical fiber products compliant with EU’s RoHS Directive?
Yes. If you are considering exporting our optical fibers or some products incorporating those fibers to EU countries, you can download the RoHS certificate of conformity for the fibers from following link.
If you would like to request RoHS certificate for other products or materials besides the fibers, or other certificate besides RoHS, please contact our representative directly by clicking [Contact us] button below this page.
Can I use my fusion splicer for PureAdvance™ ?
Yes. PureAdvance™ series fibers can be spliced with standard fusion splicers. In addition, results can be further optimized if your splicer offers a G.654.E splicing program.
What is the typical structure of optical fiber?
The typical structure of optical fiber is illustrated in the following figure.
Optical fibers are composed of two glass layers known as the core and the cladding, which are coated with protective acrylate layers. For this protective layer, Sumitomo Electric utilizes a dual-layer acrylate coating structure. The precisely controlled coating diameters and the exceptional mechanical performance of our fibers, which contribute to high product reliability, are highly regarded by customers in the device and cable industries.
The typical coating diameter of optical fiber is 250 µm. In addition, Sumitomo Electric has developed fiber products with 200 µm coating diameters by leveraging our fiber coating technologies. A 180 µm coating diameter is also available for the PureAccess™ series, which complies with Recommendation ITU-T G.657.A1 and A2.
To find out more, please visit our Optical Fibers website.
