Abstract
We used ultrafast laser inscription to fabricate three-dimensional integrated optical transitions that efficiently couple light from a multimode waveguide to a two-dimensional array of single mode waveguides and back. Although the entire device has an average insertion loss of 5.7 dB at 1539 nm, only ˜0.7 dB is due to mode coupling losses. Based on an analysis which is presented in the paper, we expect that our device should convert a multimode input into an array of single modes with a loss of ˜2.0 dB, assuming the input coupling losses are zero. Such devices have applications in astrophotonics and remote sensing. © 2011 Optical Society of America.
Original language | English |
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Pages (from-to) | 5698-5705 |
Number of pages | 8 |
Journal | Optics Express |
Volume | 19 |
Issue number | 6 |
DOIs | |
Publication status | Published - 14 Mar 2011 |