Performance of 10 Gb/s lightwave systems based on lithium niobate Mach-Zehnder modulators with asymmetric Y-branch waveguides
- 1 September 1995
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 7 (9) , 1090-1092
- https://doi.org/10.1109/68.414712
Abstract
The dependence of the transmission performance of 10 Gb/s systems on the splitting ratio of the Y-branch waveguides in a lithium niobate Mach-Zehnder modulator is assessed theoretically for single arm and dual arm modulation formats. When the splitting ratio is optimized, dual arm modulation using a push-pull configuration offers better dispersion limited performance than a conventional negative chirp modulator with symmetric Y-branch waveguides and single arm modulation (/spl alpha/ parameter of -1). The push-pull configuration also has the advantage of reducing the requirement on the amplitude of the modulating signals.<>Keywords
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