PLZT film waveguide Mach-Zehnder electrooptic modulator

Autor:	Mark Cronin-Golomb, V. Fuflyigin, S.W. Liu, G.H. Jin, Yalin Lu, J. Zhao, Y.K. Zou
Rok vydání:	2000
Předmět:	Optical fiber Materials science business.industry Transmission loss Optical field Mach–Zehnder interferometer Waveguide (optics) Atomic and Molecular Physics and Optics law.invention Optics Modulation law Beam propagation method Thin film business
Zdroj:	Journal of Lightwave Technology. 18:807-812
ISSN:	1558-2213 0733-8724
DOI:	10.1109/50.848389
Popis:	We report the numerical analysis and the fabrication of a reversed-ridge PLZT film waveguide. It is single-mode, has low transmission loss, and has large transverse cross-section suitable for efficient coupling to single-mode optical fibers. We used this structure to fabricate Mach-Zehnder (MZ) waveguide modulators. The field distribution in the channel and Y branch waveguides was calculated using a beam propagation method to analyze the modal profiles and the propagation loss. The reversed-ridge waveguides and the MZ structures were fabricated on r-sapphire substrates with a patterned ITO spacer film by sol-gel deposition. At 1.55 /spl mu/m the propagation loss was 2.7 dB/cm. In the MZ, the half-wave modulation voltage was 8.5 V using 1.55 /spl mu/m light and electrode length of 3.5 mm.
Databáze:	OpenAIRE
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