Splice loss between different Gaussian-elliptic-field single-mode fibers

Splice losses between two different Gaussian-elliptic-field single-mode fibers are derived under various mechanical misalignment conditions. Loss values for azimuthal rotation (L_φ ), transverse offset (L_d), and axial tilt (L_θ), as well as some of their combinations, are calculated under typical parameter range. Linear combination of L _φ and L_d may cause considerable error, while L_φ could be considered as independent from L_θ with fairly good accuracy. Comparisons with previous works reveal some errors in the latter case