Maximum bit-rate analysis of various symmetric extremely shallow quantum well self-electro-optic effect devices under optimized input power

1999 ◽  
Vol 38 (4) ◽  
pp. 677 ◽  
Author(s):  
Youn-Sub Lim
Keyword(s):  
Quantum Well ◽  
Input Power ◽  
Bit Rate ◽  
Rate Analysis ◽  
Electro Optic

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.

scholarly journals Dynamic beam steering with all-dielectric electro-optic III–V multiple-quantum-well metasurfaces

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Pin Chieh Wu ◽  
Ragip A. Pala ◽  
Ghazaleh Kafaie Shirmanesh ◽  
Wen-Hui Cheng ◽  
Ruzan Sokhoyan ◽  
...  
Keyword(s):  
Quantum Well ◽  
Beam Steering ◽  
Multiple Quantum Well ◽  
Multiple Quantum ◽  
Electro Optic

Electro-optic effects in GaAs/AlGaAs parabolic quantum well structures

1998 ◽  
Vol 23 (1) ◽  
pp. 93-96 ◽  
Author(s):  
W. Geisselbrecht ◽  
A. Masten ◽  
O. Gräbner ◽  
M. Forkel ◽  
G.H. Döhler ◽  
...  
Keyword(s):  
Quantum Well ◽  
Quantum Well Structures ◽  
Electro Optic

To Mitigate the Effect of Cross-Phase Modulation by Employing PC-DCF Technique in Multi-Tone RoF System

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Namita Kathpal ◽  
Amit Kumar Garg
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Phase Modulation ◽  
Performance Metrics ◽  
Signal To Noise Ratio ◽  
Optical Signal ◽  
Input Power ◽  
System Capacity ◽  
Bit Rate ◽  
Cross Phase Modulation

AbstractIt is known that the high bandwidth demands are accomplished by deploying the concept of wavelength division multiplexing in optical networks which involves the transmission of multiple wavelength signals spaced very close to each other. Due to closely spaced wavelengths, the signal power of one channel phase modulates the adjacent channel which in turn produces nonlinear effects such as cross-phase modulation (XPM), self-phase modulation (SPM) and four-wave mixing (FWM). Thus, in this paper, PC-DCF (pre-compensating dispersion compensating fiber) technique has been demonstrated and evaluated in the transmission link to compensate the XPM effects, and this result seems to significantly enhance w.r.t. transmission performance and system capacity considering performance metrics such as Optical Signal to Noise Ratio (OSNR), bit rate, Q-factor and bit error rate (BER). It is evident from the simulation results as well as through mathematical modeling that the proposed technique (PC-DCF) provides optimum results at the channel spacing of 100 GHz, bit rate of 10 Gbps and input power of 5 mW which collectively provides a 5 dB increase in OSNR as compared to the existing compensating technique.

Electro‐optic phase modulation in GaAs/AlGaAs quantum well waveguides

1988 ◽  
Vol 52 (12) ◽  
pp. 945-947 ◽  
Author(s):  
J. E. Zucker ◽  
T. L. Hendrickson ◽  
C. A. Burrus
Keyword(s):  
Quantum Well ◽  
Phase Modulation ◽  
Electro Optic

ELECTRO-OPTIC EFFECT IN A SEMI-PARABOLIC QUANTUM WELL WITH AN APPLIED ELECTRIC FIELD

2003 ◽  
Vol 17 (09) ◽  
pp. 347-354 ◽  
Author(s):  
LI ZHANG ◽  
HONG-JING XIE
Keyword(s):  
Electric Field ◽  
Quantum Well ◽  
Applied Electric Field ◽  
Field Effect ◽  
Harmonic Oscillation ◽  
Electric Field Effect ◽  
Confining Potential ◽  
Compact Density ◽  
Electro Optic ◽  
Potential Frequency

By using the compact density matrix approach, the electro-optic effect (EOE) in a semi-parabolic quantum well (QW) with an applied electric field has been theoretically investigated. Via a variant of displacement harmonic oscillation, the exact electronic states in the semi-parabolic QW with an applied electric field are obtained. Numerical results on typical GaAs material reveal that the electro-optic effect nearly linearly increases with the increasing of magnitude of the electric field, but it monotonously decreases with the increasing of confining potential frequency of the semi-parabolic QW. The EOE in the model investigated is 102 times larger than that in the symmetric parabolic QW under the same electric field and the same frequency of parabolic confining potential, which is due to the self-asymmetry of the system and the electric field effect.

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