Low-loss coherent-coupling Y branches
Optics Letters, Vol. 16, Issue 5, pp. 309-311 (1991)
http://dx.doi.org/10.1364/OL.16.000309
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Abstract
We propose the design of low-loss waveguide Y branches with coherently coupled bends. According to results of beam-propagation simulations, the excess loss of a complete Ti:LiNbO3 Y branch with a nominal half-branching angle of 1° can be as low as -0.18 dB. Similar to the case of other cascaded Y branches, when two coherently coupled Y branches are cascaded, the power distribution at the output varies with the length of the straight connecting waveguide. Details of the Y-branch design that gives low loss and equal power splitting are presented.
© 1991 Optical Society of America
Citation
F. S. Chu and Pao-Lo Liu, "Low-loss coherent-coupling Y branches," Opt. Lett. 16, 309-311 (1991)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-16-5-309
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