Noise Versus Coherency in Mm-Wave and Microwave Scattering From Nonhomogeneous Materials

Kapilevich, B.; Litvak, B.

doi:10.2528/pierb10111502

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…In this case, the OSSR and RFSSR are 42 dB and 34 dB, respectively, and they are approximately identical to the values in Figure 2. Figure 2 and Figure 3 show that the simulation results are agree with the theoretical analysis in Section 2, Equations (10) and (14). Figure 4 shows the optical spectrum, and RF spectrum of the generated optical MMW, for ∆φ = 45 • , when the ER of the IDP-MZM is 30 dB.…”

Section: Investigation the Quality Of The Generated Optical Mmw Signasupporting

confidence: 81%

“…However, Many difficulties in the 60 GHz wireless systems need to be solved, the most important is that the higher air-link loss. Another difficulty is that the 60 GHz band circuits are expensive and difficult to design and implement [1][2][3][4][5][6]. Radio over Fiber (RoF) technique, the integration of wireless and optical system, has long been proposed as an ideal technology for solving these difficulties since it can provide many advantages such as low propagation loss, low cost, large bandwidth and high transmission performance [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…In a RoF system, the cost-effective and high quality generation of high frequency MMW signals with simple implementation and low cost is a key technique that needs further development, especially for the frequency beyond 40 GHz [9][10][11][12]. The optical method is preferable over the conventional electrical method [13,14]. Various techniques have been developed, such as the stimulated Brillouin scattering (SBS) in optical fiber [15], the use of four-wave mixing in a highly nonlinear fiber (HNLF) [16], and the optical frequency up-conversion using an external modulator, such as LiNbO 3 MZM [17][18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Cost-Effective Method for High-Quality 60 GHZ Optical Millimeter Wave Signal Generation Based on Frequency Quadrupling

Al-Shareefi¹,

Idris²,

Fareq³

et al. 2013

PIER

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Abstract-In this paper, we present a cost effective method to generate a high-quality quadruple frequency optical millimeterwave (MMW) signal using an integrated dual-parallel Mach-Zehnder modulator (IDP-MZM). Not only does the method minimize the complication of the central station (CS) and its frequency demand for the devices, but the generated optical MMW signal as well has good transmission performance. By properly adjusting the direct current (DC) bias, modulation index, and using two radio frequency (RF) driving signals with 135 • phase delay, a high quality dual tone optical MMW at 60 GHz is generated from a 15 GHz RF local oscillator (LO) with optical sideband suppression ratio (OSSR) as high as 32 dB and radio frequency spurious suppression ratio (RFSSR) exceeding 33 dB without optical filter when an IDP-MZM with 30 dB extinction ratio is utilized. Furthermore, the influences of a number of non-ideal parameters, such as imperfect extinction ratio, non-ideal RF driven voltage, and phase difference of RF-driven signals applied to two subMZMs of the IDP-MZM, on OSSR are studied through simulation. Finally, we build a Radio over Fiber system through simulation, and the transmission performance of the generated optical MMW signal is

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Section: Investigation the Quality Of The Generated Optical Mmw Signasupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Cost-Effective Method for High-Quality 60 GHZ Optical Millimeter Wave Signal Generation Based on Frequency Quadrupling

Al-Shareefi¹,

Idris²,

Fareq³

et al. 2013

PIER

View full text Add to dashboard Cite

show abstract

“…In an RoF system, the cost-effective and high quality generation of high frequency mm-wave signals is a key technology that requires further development toward high-frequency bands, especially for frequencies above 40 GHz [12][13][14]. Compared with the conventional electrical method, the optical method is preferable [15][16][17]. By beating the two high-order optical sidebands with good coherence in a square-law photodetector (PD), a laser with an optical external phase or intensity modulator is a promising and attractive technology for the generation of high-frequency mm-wave signals, the frequency of which can be several-folds that of the radio frequency (RF) local oscillator [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Development of a New Approach for High-Quality Quadrupling Frequency Optical Millimeter-Wave Signal Generation Without Optical Filter

Al-Shareefi

Hassan

Malek

et al. 2013

PIER

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Abstract-In this paper, we propose a new approach to generate quadrupling-frequency optical millimeter-wave (mm-wave) signal with carrier suppression by using two parallel Mach-Zehnder modulators (MZMs) in Radio-over-fiber (RoF) system. Among the numerous properties of this approach, the most important is that a filterless optical mm-wave at 60 GHz with an optical sideband suppression ratio (OSSR) as high as 40 dB can be obtained when the extinction ratio of the MZM is 25 dB. Simplicity and cost-effectiveness have made this approach a compelling candidate for future wave-division-multiplexing RoF systems.Theoretical analysis is conducted to suppress the undesired optical sidebands for the high-quality generation of frequency quadrupling mm-wave signal. The simulation results show that a 60 GHz mm-wave is generated from a 15 GHz radio frequency (RF) oscillator with an OSSR as high as 40 dB and an radio frequency spurious suppression ratio (RFSSR) exceeding 35 dB without any optical or electrical filter when the extinction ratio of the MZM is 25 dB. Furthermore, the effect of the non-ideal RF-driven voltage as well as the phase difference of RF-driven signals applied to the two MZMs on OSSR and RFSSR is discussed and analyzed. Finally, we establish a RoF system through simulation to verify the transmission performance of the proposed scheme. The Q-factor performance and eye patterns are given.

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W-band Imaging Detector with Incoherent Illumination

Kapilevich

Litvak

Anisimov

et al. 2013

J Infrared Milli Terahz Waves

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Noise Versus Coherency in Mm-Wave and Microwave Scattering From Nonhomogeneous Materials

Cited by 4 publications

References 12 publications

A Cost-Effective Method for High-Quality 60 GHZ Optical Millimeter Wave Signal Generation Based on Frequency Quadrupling

A Cost-Effective Method for High-Quality 60 GHZ Optical Millimeter Wave Signal Generation Based on Frequency Quadrupling

Development of a New Approach for High-Quality Quadrupling Frequency Optical Millimeter-Wave Signal Generation Without Optical Filter

W-band Imaging Detector with Incoherent Illumination

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