A photonic up-converter for a WDM radio-over-fiber system using cross-absorption modulation in an EAM

Park, Chul Soo; Oh, Choong Keun; Lee, Chung Ghiu; Kim, Dong Hwan; Park, Chang‐Soo

doi:10.1109/lpt.2005.853015

Cited by 63 publications

(6 citation statements)

References 11 publications

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“…To achieve this, various types of mixers can be employed, including electrical, optical, or electro-optical mixers. Numerous methods can be used for photonic signal up-conversion, utilizing mixing processors, including an electro-optic modulator (EOM) [7,8], an electroabsorption modulator (EAM) [9] that can be used as an up-converter [10], and a photodiode (PD) [11,12]. Moreover, a range of all-optical frequency transformation techniques [13][14][15][16] capitalizes on the nonlinear attributes of an efficient semiconductor optical amplifier (SOA).…”

Section: Introductionmentioning

confidence: 99%

Terahertz Replica Generation of Ultra-High Data Rate Transmission in an Electro-Optical Semiconductor Optical Amplifier Mach–Zehnder Interferometer System

Termos,

Mansour

2024

Photonics

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This article presents an analysis of an electro-optical up-converter relying on a semiconductor optical amplifier Mach–Zehnder interferometer (SOA-MZI). The pulsed control signal is generated by an optical pulse clock (OPC) with a repetition rate of fs= 19.5 GHz. The intermediate frequency (IF) signal, which carries the modulation format known as quadratic phase shift keying (QPSK) at a frequency fIF, is shifted at the output of the SOA-MZI to high outlet mixing frequencies nfs±fIF, where n represents the harmonic order of the OPC. To examine the characteristics of the sampled QPSK signals, we employ the Virtual Photonics Inc. (VPI) emulator and evaluate them using significate metrics like error vector magnitudes (EVMs), conversion gains, and bit error rates (BERs). The up-mixing process is mainly achieved through the cross-phase modulation (XPM) effect in the SOA-MZI, which operates within a 195.5 GHz ultrahigh frequency (UHF). The electro-optical SOA-MZI up-converter demonstrates consistent uplifting conversion gains across the scope of the output mixing frequencies. The simulated conversion gain deteriorates from 38 dB at 20 GHz to 13 dB at 195.5 GHz. The operational efficiency of the electro-optical SOA-MZI design, employing the standard modulation approach, is also evaluated by measuring the EVM values. The EVM attains a 24% performance level at a data rate of 5 Gbit/s in conjunction with the UHF of 195.5 GHz. To corroborate our results, we compare them with real-world experiments conducted with the UHF of 59 GHz. The maximum frequency range of 1 THz is attained by increasing the OPC repetition rate. Ultimately, through elevating the control frequency to 100 GHz, the generation of terahertz replicas of the 4096-QAM (quadrature amplitude modulation) compound signal becomes achievable at heightened UHF, extending 1 THz, while maintaining a data transmission rate of 120 Gbit/s and upholding exceptional performance characteristics.

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Section: Introductionmentioning

confidence: 99%

Terahertz Replica Generation of Ultra-High Data Rate Transmission in an Electro-Optical Semiconductor Optical Amplifier Mach–Zehnder Interferometer System

Termos,

Mansour

2024

Photonics

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“…Photonic mixers can also perform essential logic gate operations in addition to mixing [6][7][8][9][10][11][12][13][14][15][16]. These optical mixers include Mach-Zehnder modulators (MZMs) with good performance characterizations [5,17], electro-absorption modulators (EAMs) with the cross-absorption modulation (XAM) effect [18,19] used for mixing, Photodiodes (PDs), particularly uni-traveling carrier PDs (UTC-PDs) [20,21], and positive-intrinsic-negative PD (PIN-PD) [22], which are used for frequency mixing due to their nonlinear current response, semiconductor optical amplifier (SOA) reliant on the four-wave mixing (FWM) [23,24] and the cross gain modulation (XGM) [25,26] impacts, and SOA-Mach Zehnder interferometer (SOA-MZI) dependent on the cross-phase modulation (XPM) [27][28][29][30][31] effect.…”

Section: Introductionmentioning

confidence: 99%

Establishment of an Electro-Optical Mixing Design on a Photonic SOA-MZI Using a Differential Modulation Arrangement

Termos

Mansour

Ebrahim-Zadeh

2023

Sensors

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We design and evaluate two experimental systems for a single and simultaneous electro-optical semiconductor optical amplifier Mach-Zehnder interferometer (SOA-MZI) mixing system based on the differential modulation mode. These systems and the optimization of their optical and electrical performance largely depend on characteristics of an optical pulse source (OPS), operating at a frequency of f = 39 GHz and a pulse width of 1 ps. The passive power stability of the electro-optical mixing output over one hour is better than 0.3% RMS (root mean square), which is excellent. Additionally, we generate up to 22 dBm of the total average output power with an optical conversion gain of 32 dB, while achieving a record output optical signal to noise ratio (OSNR) up to 77 dB. On the other hand, at the SOA–MZI output, the 128 quadratic amplitude modulation (128-QAM) signal at an intermediate frequency (IF), f1, is up-mixed to higher output frequencies nf ± f1. The advantages of the resulting 128-QAM mixed signal during electrical conversion gains (ECGs) and error vector magnitudes (EVMs) are also evaluated. The performed empirical SOA-MZI mixing can operate up to 118.5 GHz in its high-frequency range. The positive and almost constant conversion gains are achieved. Indeed, the obtained conversion gain values are very close across the entire range of output frequencies. The largest frequency range achieved during experimental work is 118.5 GHz, where the EVM achieves 6% at a symbol rate of 10 GSymb/s. Moreover, the peak data rate of the 128-QAM up mixed signal can reach 70 GBit/s. Finally, the study of the simultaneous electro-optical mixing system is accepted with unmatched performance improvement.

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“…There are numerous of RoF applications such as cellular or satellite communications, wireless fidelity (WiFi), and radar systems [1]. Different techniques to implement mixed optical signals have been studied to enhance the performance of a RoF system and minimize the system cost based on a SOA-MZI [2][3][4][5][6] and other optical mixers [7][8][9][10][11][12][13][14]. Frequency converters play a pivotal role in all-optical architectures by providing switching functions.…”

Section: Introductionmentioning

confidence: 99%

OFDM signal down frequency conversion based on a SOA-MZI sampling mixer using differential modulation and switching architectures

Termos

Mansour

2021

Optik

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A photonic up-converter for a WDM radio-over-fiber system using cross-absorption modulation in an EAM

Cited by 63 publications

References 11 publications

Terahertz Replica Generation of Ultra-High Data Rate Transmission in an Electro-Optical Semiconductor Optical Amplifier Mach–Zehnder Interferometer System

Terahertz Replica Generation of Ultra-High Data Rate Transmission in an Electro-Optical Semiconductor Optical Amplifier Mach–Zehnder Interferometer System

Establishment of an Electro-Optical Mixing Design on a Photonic SOA-MZI Using a Differential Modulation Arrangement

OFDM signal down frequency conversion based on a SOA-MZI sampling mixer using differential modulation and switching architectures

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