Interferometric waveguide modulator with polarization‐independent operation
作者:
W. K. Burns,
T. G. Giallorenzi,
R. P. Moeller,
E. J. West,
期刊:
Applied Physics Letters
(AIP Available online 1978)
卷期:
Volume 33,
issue 11
页码: 944-947
ISSN:0003-6951
年代: 1978
DOI:10.1063/1.90228
出版商: AIP
数据来源: AIP
摘要:
A Mach‐Zehnder interferometric waveguide modulator is demonstrated which simultaneously modulates both TE and TM modes. Two sets of electrodes are utilized to provide approximate independent control of vertical and horizontal field components across the channel waveguides. InZ‐X–cut LiNbO3this is shown to provide two polarization‐independent points of operation. With Ti‐diffused waveguides operated at 0.633 &mgr;m we obtained 90–95% modulation with applied voltages of 1.3 and 44 V and also with −8 and −36 V. Electrode design and alignment are shown to be important factors in device operation.
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