Assessment of SSB, Modified-SSB and VSB Modulation Techniques based on Modulation Index, Extinction Ratio, Chromatic Dispersion and Received RF power

2021 ◽  
Author(s):  
Apoorv Kulkarni ◽  
Shrey Kothavade ◽  
Dhananjay Patel
Keyword(s):  
Chromatic Dispersion ◽  
Extinction Ratio ◽  
Modulation Index ◽  
Rf Power ◽  
Modulation Techniques

INFLUENCE OF EXTINCTION RATIO ON THE PERFORMANCE OF RZ-ODPASK MODULATION FORMAT

2009 ◽  
Vol 23 (11) ◽  
pp. 2479-2489
Author(s):  
XIAOJUN LI ◽  
AIJUN WEN ◽  
ZENGJI LIU ◽  
TAO SHANG
Keyword(s):  
Single Channel ◽  
Chromatic Dispersion ◽  
Extinction Ratio ◽  
Optical Fields ◽  
Analytical Methodology ◽  
Modulation Formats ◽  
Modulation Format ◽  
Fiber Nonlinearity ◽  
Shift Keying ◽  
Phase Amplitude

The influence of extinction ratio (ER) on the performance of 120 Gbps return-to-zero octal differential phase-amplitude-shift keying (RZ-ODPASK) modulation format in single-channel transmission is investigated. Based on the modulation and demodulation schemes, the structures of RZ-ODPASK transmitter and receiver are presented; and expressions for the output optical fields and electrical currents of amplitude and phase tributaries are analytically acquired. As ER is a tradeoff for good performance of the two tributaries, the optimal ER for back-to-back configuration is theoretically derived as 2.32 dB for the first time, which is verified by simulation. Then the tolerances to residual chromatic dispersion (CD) and fiber nonlinearity of RZ-ODPASK transmission are numerically studied, respectively. The results indicate that phase tributary is more robust against both dispersion and nonlinearity impairment than the amplitude tributary. To balance the performance of the two tributaries, curves of the optimal ER values with the change of residual CD and fiber nonlinearity are also obtained, respectively. The results can be useful for the design of RZ-ODPASK systems; in the meantime, the analytical methodology described in this paper is applicable to other multilevel RZ-DPASK modulation formats.

PMD Monitoring by Tracking the Chromatic-Dispersion-Insensitive RF Power of the Vestigial Sideband

2004 ◽  
Vol 16 (9) ◽  
pp. 2177-2179 ◽  
Author(s):  
T. Luo ◽  
Z. Pan ◽  
S.M.R.M. Nezam ◽  
L.S. Yan ◽  
A.B. Sahin ◽  
...  
Keyword(s):  
Chromatic Dispersion ◽  
Rf Power

scholarly journals Generation of Switchable Chirp Waveforms in the Photonic Domain with Immunity to Dispersion-Induced Power Fading

Photonics ◽  
2021 ◽  
Vol 8 (11) ◽  
pp. 501
Author(s):  
Chaoqun Huang ◽  
Jun Ou ◽  
Hao Chi
Keyword(s):  
Bias Voltage ◽  
Chromatic Dispersion ◽  
Radio Over Fiber ◽  
Rf Power ◽  
Optical Filtering ◽  
Polarization Control ◽  
Mach Zehnder Modulator ◽  
The Stability ◽  
Rf Signal ◽  
The Given

A novel photonic approach to generating switchable multi-format chirp waveforms using a dual-drive dual-parallel Mach–Zehnder modulator (DD-DPMZM) is proposed and experimentally demonstrated. By properly controlling the bias voltage on the DD-DPMZM, different chirp RF waveforms, including the dual-, down-, and up-chirp waveforms, can be obtained when an RF signal and a chirp RF signal are injected into the modulator. A main feature of this approach is that it can eliminate chromatic dispersion-induced RF power fading, which is highly desired in distributed multi-functional radars based on radio over fiber. There is no polarization control and optical filtering in the given scheme, which also improves the stability and feasibility of the approach. An experiment successfully demonstrated the generation and switching of the multi-format chirp waveforms and the capability of immunity to dispersion-induced power fading.

Chromatic Dispersion Monitoring for DPSK Systems Using RF Power Spectrum

2009 ◽  
Vol 27 (24) ◽  
pp. 5704-5709 ◽  
Author(s):  
Jian Zhao ◽  
A.P.T. Lau ◽  
K.K. Qureshi ◽  
Zhaohui Li ◽  
Chao Lu ◽  
...  
Keyword(s):  
Power Spectrum ◽  
Chromatic Dispersion ◽  
Rf Power

Simultaneous chromatic dispersion monitoring, extinction ratio enhancement and wavelength conversion using four-wave mixing

2012 ◽  
Vol 285 (16) ◽  
pp. 3519-3523 ◽  
Author(s):  
Simin Sun ◽  
Sheng Cui ◽  
Jun Li ◽  
Xiaozhi Fang ◽  
Changjian Ke ◽  
...  
Keyword(s):  
Wavelength Conversion ◽  
Chromatic Dispersion ◽  
Extinction Ratio ◽  
Four Wave Mixing ◽  
Wave Mixing

Design of a New Single Phase 7-Level Reduced Switches Count Multilevel Inverter Topology

2021 ◽  
pp. 154-164
Author(s):  
Nikhil Agrawal ◽  
Dev Prakash Chourasia ◽  
Bharat Bhushan Khare
Keyword(s):  
Single Phase ◽  
Multilevel Inverter ◽  
Modulation Index ◽  
Matlab Simulink ◽  
Modulation Techniques ◽  
Inverter Topology

This chapter presents a new single-phase multilevel inverter topology. This topology requires fewer components in comparison to conventional multilevel inverter topology such as diode clamped, flying capacitor, and cascade h-bridge inverter. In this topology, no extra clamping diode and no extra clamping capacitor are required for operation. This chapter also presents the control and modulation techniques. These techniques applied on this proposed MLI topology and simulation result are calculated with the help of MATLAB/SIMULINK software and are compared on the basis of THD with over and under modulation index.

scholarly journals An Integrated Photonic Electric-Field Sensor Utilizing a 1 × 2 YBB Mach-Zehnder Interferometric Modulator with a Titanium-Diffused Lithium Niobate Waveguide and a Dipole Patch Antenna

Crystals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 459 ◽  
Author(s):  
Jung
Keyword(s):  
Lithium Niobate ◽  
Electric Field ◽  
Optical Waveguides ◽  
Extinction Ratio ◽  
Rf Power ◽  
Applied Electric Field Strength ◽  
Electric Field Sensors ◽  
Electric Field Sensor ◽  
Electro Optic ◽  
Field Sensor

We studied photonic electric-field sensors using a 1 × 2 YBB-MZI modulator composed of two complementary outputs and a 3 dB directional coupler based on the electro-optic effect and titanium diffused lithium–niobate optical waveguides. The measured DC switching voltage and extinction ratio at the wavelength 1.3 μm were ~16.6 V and ~14.7 dB, respectively. The minimum detectable fields were ~1.12 V/m and ~3.3 V/m, corresponding to the ~22 dB and ~18 dB dynamic ranges of ~10 MHz and 50 MHz, respectively, for an rf power of 20 dBm. The sensor shows an almost linear response to the applied electric-field strength within the range of 0.29 V/m to 29.8 V/m.

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