Pre-equalizing electro-optic modulator utilizing velocity-mismatched traveling-wave electrode and polarization-reversed structures

2015 ◽  
Author(s):  
Takayuki Mitsubo ◽  
Tomohiro Ohno ◽  
Hiroshi Murata ◽  
Yasuyuki Okamura
Keyword(s):  
Traveling Wave ◽  
Electro Optic ◽  
Electro Optic Modulator

Design of Traveling-Wave Electrode for Silicon Mach-Zehnder Electro-Optic Modulator

2021 ◽  
Author(s):  
Linjie Yang ◽  
Shiquan Wang ◽  
Fanmin Kong ◽  
Kang Li ◽  
Liuge Du
Keyword(s):  
Traveling Wave ◽  
Electro Optic ◽  
Electro Optic Modulator

scholarly journals Design and Manufacture of Traveling-wave Electro-optic Modulator for X-band LFM Signal Generation

2021 ◽  
Vol 24 (6) ◽  
pp. 610-618
Author(s):  
Minwoo Yi ◽  
Sungjun Yoo ◽  
Youngseok Bae ◽  
Sunghoon Jang ◽  
Joonhyung Ryoo ◽  
...  
Keyword(s):  
Traveling Wave ◽  
Band Frequency ◽  
Microwave Transmission ◽  
Electro Optic ◽  
X Band ◽  
Microwave System ◽  
Broadband Signal ◽  
Linear Frequency Modulated Signal ◽  
Design And Manufacture ◽  
Electro Optic Modulator

In this paper, a photonic-based microwave system technology is described, and a traveling-wave electro-optic modulator is designed and manufactured as a key component. The fabricated modulator is composed of a metal diffusion waveguide for optical transmission and a planar waveguide electrode on lithium niobate substrate for microwave transmission. The electro-optic response bandwidth of I and Q channels in a fabricated dual parallel Mach-Zehnder modulator were measured for 27.67 and 28.11 GHz, respectively. Photonic four times up-converted X-band frequency and linear frequency modulated signal were confirmed using the fabricated electro-optic modulator by S-band input signal. The confirmed broadband signal can be applied to a microwave system for surveillance and high-resolution ISAR imaging.

Modeling and Design of a Velocity-Matched Traveling-Wave Electro-Optic Modulator on InP

2003 ◽  
Author(s):  
W. Pascher ◽  
J.H. den Besten ◽  
D. Caprioli ◽  
R. van Dijk ◽  
X.J.M. Leijtens ◽  
...  
Keyword(s):  
Traveling Wave ◽  
Electro Optic ◽  
Electro Optic Modulator

Electro-Optic Modulator for Compensation of Third-Order Intermodulation Distortion Using Frequency Chirp Modulation

2020 ◽  
Vol E103.C (11) ◽  
pp. 653-660
Author(s):  
Daichi FURUBAYASHI ◽  
Yuta KASHIWAGI ◽  
Takanori SATO ◽  
Tadashi KAWAI ◽  
Akira ENOKIHARA ◽  
...  
Keyword(s):  
Intermodulation Distortion ◽  
Frequency Chirp ◽  
Third Order ◽  
Chirp Modulation ◽  
Electro Optic ◽  
Electro Optic Modulator

Velocity matching of III-V travelling-wave electro-optic modulator structures

1990 ◽  
Vol 26 (1) ◽  
pp. 32-33 ◽  
Author(s):  
M.R.T. Tan ◽  
I. Kim ◽  
J. Chang ◽  
S.Y. Wang
Keyword(s):  
Travelling Wave ◽  
Electro Optic ◽  
Velocity Matching ◽  
Electro Optic 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.

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