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Compact, integrated PLZT optical switch array
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DOI：10.3788/COL201513.111301.png)
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摘要
En 中文
Due to the excellent electro-optic properties of lead lanthanum zirconium titanate (dPb, La) (Zr, Ti)O-3, PLZT), compact 1 x 2 and 1 x 4 PLZT optical switches with a high response speed are proposed and fabricated successfully in this Letter. By introducing a thin isolating layer between the waveguides and the electrodes, the absorption loss of the fabricated 1 x 2 PLZT switch caused by the electrodes is reduced 8.9 dB with a relatively low driving voltage. The 1 x 2 PLZT switch shows an insertion loss of 18.3 dB and crosstalk of -20.5 dB at an applied voltage of 9.5 V. The fabricated 1 x 4 switch array shows an insertion loss of 20.7 dB and a crosstalk of -20.5 dB at an applied voltage of 13 V. The response time of the switches is less than 27 ns, and the device's size is only 15 mm x 6 mm. The switches can be used in optical communication systems.
Keyword:
WAVE-GUIDES
THIN-FILMS
SECTION
