Journal
RSC ADVANCES
Volume 5, Issue 21, Pages 15784-15794Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra13250e
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Funding
- National Natural Science Foundation of China [11104284, 61101054]
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In this brief review, nonlinear optical (NLO) chromophores widely used in electro-optic (EO) devices are summarized according to their EO coefficients. The advances of EO modulators based on organic materials in high bandwidth and low half wave voltages (V-pi) are discussed. The review is mainly devoted to the following aspects: (1) verification of high frequency operation and reduction of V-pi for all polymer waveguide EO modulators; (2) structures and advantages of sol-gel waveguide EO modulators; (3) principles and developments of silicon-organic hybrid (SOH) EO modulators. All the considerations are illustrated by the architecture of the devices and the used physical and chemical principles are explained in detail. Further means of improvement of their parameters are indicated.
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