Narrowing the linewidth of a distributed Bragg reflector laser with an intracavity electro-optic modulator (Conference Presentation)

2020 ◽  
Author(s):  
Boris Braverman
Keyword(s):  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Electro Optic ◽  
Electro Optic Modulator

GaAs/GaAlAs MULTIQUANTUM WELL ELECTROABSORPTION REFLECTION MODULATOR AND SELF ELECTRO-OPTIC EFFECT DEVICE (SEED)

1996 ◽  
Vol 07 (03) ◽  
pp. 399-407
Author(s):  
RONGHAN WU ◽  
WENZHI GAO ◽  
JUN ZHAO ◽  
ZHIBIAO CHEN ◽  
SHIMING LIN ◽  
...  
Keyword(s):  
Stark Effect ◽  
Optical Switch ◽  
Contrast Ratio ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Quantum Confined Stark Effect ◽  
Electro Optic ◽  
Fabry Perot ◽  
Fabrication And Characterization

GaAs/GaAlAs MQW reflection modulators and SEED have been investigated. The analysis is emphasized on the combined behaviors of quantum confined Stark effect (QCSE), distributed Bragg reflector (DBR), and different asymmetric Fabry–Perot cavities (ASFP). Experimental results include the fabrication and characterization of a modulator array with a contrast ratio of about 10 dB and S-SEED array with optical switch energy less than 10 fJ /(µ m )2. An application of a modulator array in microoptical interconnection module is also demonstrated.

Electro-optic low-voltage InGaAs/GaAs multiple quantum well modulator with organic–inorganic distributed Bragg reflector

1999 ◽  
Vol 25 (1-2) ◽  
pp. 313-317 ◽  
Author(s):  
M. De Vittorio ◽  
M. Lomascolo ◽  
A. Passaseo ◽  
R. Cingolani ◽  
A Convertino ◽  
...  
Keyword(s):  
Quantum Well ◽  
Low Voltage ◽  
Multiple Quantum Well ◽  
Bragg Reflector ◽  
Multiple Quantum ◽  
Distributed Bragg Reflector ◽  
Electro Optic

scholarly journals Widely tunable electro-optic distributed Bragg reflector in liquid crystal waveguide

2010 ◽  
Vol 18 (11) ◽  
pp. 11524 ◽  
Author(s):  
Giovanni Gilardi ◽  
Rita Asquini ◽  
Antonio d’Alessandro ◽  
Gaetano Assanto
Keyword(s):  
Liquid Crystal ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Electro Optic

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.

Optical two-tone generation and SSB modulation using electro-optic modulator with suppressing redundant spectrum components

2011 ◽  
Vol 3 (3) ◽  
pp. 295-300 ◽  
Author(s):  
Akira Enokihara ◽  
Tadashi Kawai ◽  
Tetsuya Kawanishi
Keyword(s):  
Input Power ◽  
Intensity Level ◽  
Optical Signals ◽  
Single Sideband ◽  
Electro Optic ◽  
Rf Signals ◽  
Frequency Components ◽  
Optical Single Sideband ◽  
Tone Generation ◽  
Electro Optic Modulator

Doubled frequency optical two-tone generation and optical single sideband (SSB) modulation by the dual-electrode-type electro-optic (EO) modulator with a single Mach–Zehnder (MZ) interferometer were considered. We theoretically showed that redundant spectrum components in the modulated optical signals, which are caused by the imbalance of light splitting ratio between the two arms of the interferometer, are significantly suppressed by controlling the input power ratio of RF modulation signals applied to each electrode. This effect was confirmed by the experiment, where an optical two-tone with the redundant components 49.8 dB lower than the primary two-tone components in intensity level was obtained. This method is also valid for suppression of undesired frequency components of RF signals that are generated at a photo detector from the optical two-tone waves propagated through a dispersive optical fiber.

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