Al. Ye et al., NEW FABRICATION TECHNIQUE FOR HIGH-PERFORMANCE POLARIZATION-MAINTAINING OPTICAL-FIBER COUPLERS, Electronics Letters, 30(23), 1994, pp. 1971-1972
A simple and novel technique for fabricating polarisation maintaining
optical fibre couplers is reported. This technique is different from e
xisting approaches of polarisation coupler fabrication, in that it avo
ids the need to align the polarisation axis during each coupler fabric
ation. Both low loss and low polarisation crosstalk have been achieved
.