A novel fiber-optic device acting simultaneously as a polarizer and a directional coupler is fabricated by coating a metal layer onto the fused biconical-taper structure of single-mode fibers. This polarizing directional coupler exhibits an extinction ratio of 15 dB together with a 1:1 power-splitting ratio and an excess loss of 2.8 dB.
© 1984 Optical Society of America
Original Manuscript: December 15, 1983
Manuscript Accepted: February 10, 1984
Published: May 1, 1984
M. Kawachi and M. Kobayashi, "Fiber-optic polarizing directional coupler," Opt. Lett. 9, 183-185 (1984)