Loss factors analysis for single-mode fiber splicing without care axis alignment

Abstract

Optimum splice condition is clarified in single-mode fiber splicing without core axis alignment by analyzing loss factors quantitatively. Dominant splice loss factors are core deformation caused by fiber axis discrepancy and core axis misalignment caused by core eccentricity. To suppress average splice loss to less than 0.1 dB, average core eccentricity suppression to less than 0.35 pm is necessary. A new method for setting fiber endface gaps accurately and quickly is proposed. This method helps to realize the optimum condition easily. An average splice loss of 0.012 dB is achieved by a new splice machine, manufactured and based on the fiber endface setting method.

Loss Estimation in Mass Splicing of Single-Mode Fiber Ribbons

“…So, splice loss a s can be represented as follows [8], For example, core axis misalignment loss a se caused by core eccentricities, mode field mismatch loss a sw , core deformation loss a sh caused by fiber axis discrepancy, and a ss caused by over stuffing of the fiber ends.…”

Pressure-assisted low-loss fusion splicing between photonic crystal fiber and single-mode fiber

“…The factors that contribute to the splice loss include the transverse offset, the angular misalignment, the mode-field mismatch, and the deformation of the fiber structure [16]. For fusion splicing between a PCF and a SMF, the mode-field mismatch and the air-hole collapse during splicing are the two main factors.…”

Laser induced splicing of photonic crystal and standard single mode fibers

“…Some of the commercial electric arc splicing systems (such as that from Corning) employ imaging technique as well as the macro-bending method to perform active alignment, whereas others (e.g. Fujikura and Sumitomo) use only image profile alignment method [36].…”