scholarly journals Ultrabroadband Electro-Optic Modulator Based on Hybrid Silicon-Polymer Dual Vertical Slot Waveguide

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Shouyuan Shi ◽  
Dennis W. Prather
Keyword(s):  
High Speed ◽  
Ferroelectric Materials ◽  
Slot Waveguide ◽  
Driving Voltage ◽  
Vertical Slot ◽  
Half Wavelength ◽  
Electro Optic ◽  
Optical Modes ◽  
Hybrid Silicon ◽  
Electro Optic Modulator

We present a novel hybrid silicon-polymer dual slot waveguide for high speed and ultra-low driving voltage electro-optic (EO) modulation. The proposed design utilizes the unique properties of ferroelectric materials such as LiNbO3 to achieve dual RF and optical modes within a low index nanoslot. The tight mode concentration and overlap in the slot allow the infiltrated organic EO polymers to experience enhanced nonlinear interaction with the applied electric field. Half-wavelength voltage-length product and electro-optic response are rigorously simulated to characterize the proposed design, which reveals ultrabroadband operation, up to 250 GHz, and subvolt driving voltage for a 1 cm long modulator.

scholarly journals A New Method to Verify the Measurement Speed and Accuracy of Frequency Modulated Interferometers

2021 ◽  
Vol 11 (13) ◽  
pp. 5787
Author(s):  
Toan-Thang Vu ◽  
Thanh-Tung Vu ◽  
Van-Doanh Tran ◽  
Thanh-Dong Nguyen ◽  
Ngoc-Tam Bui
Keyword(s):  
Phase Change ◽  
High Speed ◽  
Measurement Accuracy ◽  
Slow Motion ◽  
New Method ◽  
Virtual Displacement ◽  
Electro Optic ◽  
Lock In ◽  
Speed And Accuracy ◽  
Electro Optic Modulator

The measurement speed and measurement accuracy of a displacement measuring interferometer are key parameters. To verify these parameters, a fast and high-accuracy motion is required. However, the displacement induced by a mechanical actuator generates disadvantageous features, such as slow motion, hysteresis, distortion, and vibration. This paper proposes a new method for a nonmechanical high-speed motion using an electro-optic modulator (EOM). The method is based on the principle that all displacement measuring interferometers measure the phase change to calculate the displacement. This means that the EOM can be used to accurately generate phase change rather than a mechanical actuator. The proposed method is then validated by placing the EOM into an arm of a frequency modulation interferometer. By using two lock-in amplifiers, the phase change in an EOM and, hence, the corresponding virtual displacement could be measured by the interferometer. The measurement showed that the system could achieve a displacement at 20 kHz, a speed of 6.08 mm/s, and a displacement noise level < 100 pm//√Hz above 2 kHz. The proposed virtual displacement can be applied to determine both the measurement speed and accuracy of displacement measuring interferometers, such as homodyne interferometers, heterodyne interferometers, and frequency modulated interferometers.

Single-Source Duplex High-Speed FSO Communications Using Electro-Optic Modulator-Based MRR

2018 ◽  
Author(s):  
Xianglian Feng ◽  
Hexin Jiang ◽  
Zhihang Wu ◽  
Tianshu Wang ◽  
Hongwei He ◽  
...  
Keyword(s):  
High Speed ◽  
Single Source ◽  
Electro Optic ◽  
Electro Optic Modulator

High speed electro-optic modulation in hybrid silicon on insulator slotted photonic crystal

2010 ◽  
Author(s):  
Stefan Prorok ◽  
Jan Hendrik Wulbern ◽  
Jan Hampe ◽  
Alexander Petrov ◽  
Manfred Eich ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
High Speed ◽  
Silicon On Insulator ◽  
Electro Optic ◽  
Hybrid Silicon

scholarly journals Low V_pp, ultralow-energy, compact, high-speed silicon electro-optic modulator

2009 ◽  
Vol 17 (25) ◽  
pp. 22484 ◽  
Author(s):  
Po Dong ◽  
Shirong Liao ◽  
Dazeng Feng ◽  
Hong Liang ◽  
Dawei Zheng ◽  
...  
Keyword(s):  
High Speed ◽  
Ultralow Energy ◽  
Electro Optic ◽  
Electro Optic Modulator
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