Abstract
Planar hyperbolical lenses with an average efficiency of 85% for coupling a 40 μm wide beam into a 4 μm wide waveguide are realised. The total length required for the beam compression is 600 μm, with a lateral index contrast of 0.01. Good agreement is found between the BPM predicted and the measured lens efficiencies.
Original language | English |
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Pages (from-to) | 1064-1066 |
Number of pages | 3 |
Journal | Electronics letters |
Volume | 26 |
Issue number | 14 |
DOIs | |
Publication status | Published - 5 Jul 1990 |