Abstract

Many in-line fiber-optic passive components have been fabricated on the basis of the polished fiber-optic half-coupler: fiber-optic couplers, filters, resonators, polarizers, and electrooptical switches. Apparently, how to obtain a high-quality fiber-optic half-coupler is an important subject. To improve the quality of polished surface on the fiber-optic half-coupler, we invented a new block structure.¹

© 1988 Optical Society of America