Fiber Fusion Technology

The core technology of Plank Optoelectronics Inc. is the operating of fiber fusion splicing.

Fusion splicing provides a fast, reliable, low-loss, fiber-to-fiber connection by creating a homogenous joint between the two fiber ends. The fibers are melted or fused together by heating the fiber ends, Plank engineers using an well-controlled flame or electric arc(under developing). Fusion splices provide a high-quality joint with the lowest loss (in the range of 0.01 dB to 0.10 dB for single-mode fibers) and are practically nonreflective.


Fusion splicing of optical fiber is an essential process in optical component manufacturing and optoelectronic product assembly. Optical fibers are fused (joined) to provide interconnections with low transmission loss, low back reflection and long-term stability. The process begins with fiber preparation, including fiber stripping, cleaning and cleaving, followed by fusion splicing. Each preparation process is done with a dedicated tool, and splicing is accomplished with a fusion splicer. A fusion splicer precisely aligns cores of two optical fibers to be spliced, produces an electrical arc that melts the ends of the fibers and finally, pushes the melted ends together forming a highly reliable, high performance junction.


Plank engineers have developed a proprietary fiber fusion technology that uses optical fiber as the constituent medium. By processing light in the fiber itself, Plank Fiber optic components exhibit significantly lower transmission loss, can accommodate high optical power, and provide the flexibility needed for custom requirements.

Plank manufacturing team is capable of producing a variety of fiber fusion component product lines: tapered filters (in-line Attenuator), fused couplers, and WDMs.

These structures can be combined for custom-designed applications such as Splicing System and access networks or next-generation multi terabit all-optical transmission networks.