A recent improvement of a 2-D array of distributed-index (DI) planar microlenses is presented to demonstrate a 2-D integrated optical component using a planar microlens array. These components are made by stacking planar microlens arrays and other planar optical devices. The improved planar microlens has f = 2.0 mm, a N.A. = 0.23, and its spherical aberration is very small. A fiber coupler is demonstrated. From a preliminary experiment, it is shown that the coupling loss of each channel is <0.5 dB for coupling 50-μm core DI fibers.
© 1983 Optical Society of America
Original Manuscript: September 21, 1982
Published: February 1, 1983
Masahiro Oikawa, Kenichi Iga, Shigeyoshi Misawa, and Yasuo Kokubun, "Improved distributed-index planar microlens and its application to 2-D lightwave components," Appl. Opt. 22, 441-442 (1983)