In the ever-evolving landscape of network connectivity, selecting the appropriate termination method for fiber optic installations is crucial. Whether you’re a seasoned installer or a newcomer to the field, understanding the nuances of termination techniques can significantly impact your project’s success. Let’s break down the three termination techniques that are most commonly used in networks like yours.
Epoxy and Polish Connector
With field polishing, contractors attach using an adhesive and individually polish each connector. While once a very popular method, epoxy/polish introduces many downsides. It can be very time-consuming and requires consistent replenishment of consumables. Since this is craft sensitive, it is more difficult to provide a consistent end face quality. This polishing method can also be difficult to achieve lower insertion loss values and the 55 dB return loss requirement for single-mode UPC connectivity. If polishing is the selected method, it is recommended to invest in an optical time domain reflectometer (OTDR) to measure optical reflectance. Tier 1 Certification (via an Optical Loss Test Set) may still be required when submitting for warranties, and some technicians don’t use an OTDR, resulting in poor reflectance found when problems arise.
Mechanical Splice Connector
Traditionally, mechanical connectors were considered a temporary “quick fix” solution. However, the technology in mechanical connectors has advanced over the years, and the advantages have made them a higher quality long-term solution. With mechanical connectors, the end-faces are factory-polished and highly controlled, leading to better insertion loss, better return loss and less overall labor. However, this termination option will have a higher material cost than field polished connectors and will require a precision cleaver.
Fusion Splicing
Unlike mechanical splicing that only aligns and does not physically join fibers, fusion splicing provides a permanent fusion connection between fibers. Typically, fusion splicing has a loss of 0.1 dB or less, while mechanical splicing typically has higher insertion loss of between 0.2 dB to 0.50 dB. Although mechanical splices can be valuable for certain applications, the fusion splicer can estimate the loss of the fusion splice, reducing the uncertainty of mechanical splicing or field polishing.
For these reasons, coupled with the steady decrease of fusion splicer prices, splicing pigtails, splice-on connectors (SOCs), and splice modules have become popular termination options for the enterprise. For a more in-depth comparison of these termination methods, check out the table below, which compares different termination approaches using Leviton solutions, including epoxy/polish connectors, mechanical splice connectors, and several fusion splicing options. The table compares termination options across six categories, from loss performance to skill set to material and labor costs. Learn more about Leviton Network Solutions’ fusion splicing offerings.
