Adjustment of the coupling ratio by laser ablation of Ti:LiNbO3 directional couplers

The coupling ratio of directional couplers in Z-cut Y-propagation and X-cut Z-propagation LiNbO3 crystals was adjusted by laser ablation. The coupling ratio change is more efficient for the TM-mode of Z-cut couplers. The method can be used to correct the uncertainty of the coupling ratio for directi...

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Veröffentlicht in:	Optics and laser technology 2002-09, Vol.34 (6), p.453-455
Hauptverfasser:	CHEN, Chii-Chang, PORTE, Henri, GOEDGEBUER, Jean-Pierre, ARMBRUSTER, Vincent, FERRIERE, Richard
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Circuit properties Electric, optical and optoelectronic circuits Electronics Engineering Sciences Exact sciences and technology Integrated optics. Optical fibers and wave guides Optical and optoelectronic circuits Other Waveguides, couplers, and arrays
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The coupling ratio of directional couplers in Z-cut Y-propagation and X-cut Z-propagation LiNbO3 crystals was adjusted by laser ablation. The coupling ratio change is more efficient for the TM-mode of Z-cut couplers. The method can be used to correct the uncertainty of the coupling ratio for directional couplers that occurs during fabrication process.
ISSN:	0030-3992 0143-8166 1879-2545
DOI:	10.1016/S0030-3992(02)00041-5