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11 July 2000 Characterizations of Zn-diffused lithium niobate directional coupler by post thermal treatment
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Abstract
A study of find adjustment of the coupling coefficient of Zn-diffused directional couplers on Z-cut lithium niobate substrate by a series of post thermal-treatment is presented for the first time. Optical mode profiles and propagation losses before and after the treatments are measured for the 1.32 (mu) m wavelength. Experimental results show that the post thermal-treatment is quite efficient for fine adjustment of the cross coupling power ration of the directional coupler.
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RueyChing Twu and Way-Seen Wang "Characterizations of Zn-diffused lithium niobate directional coupler by post thermal treatment", Proc. SPIE 4078, Optoelectronic Materials and Devices II, (11 July 2000); https://doi.org/10.1117/12.392172
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