Telecom-Band Directional Coupler Written With Femtosecond Fiber Laser
- 23 October 2006
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 18 (20) , 2174-2176
- https://doi.org/10.1109/lpt.2006.884241
Abstract
A femtosecond fiber laser with 1-MHz repetition rate was optimized to write low-loss waveguides and directional couplers inside bulk borosilicate glass. For the first time, this three-dimensional writing method has produced low insertion loss and near-unity maximum coupling ratio. Results are presented at telecommunication wavelengths of 1310 and 1550 nmKeywords
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