Radio-Over-Fiber Transport Systems Based on DFB Ld With Main and -1 Side Modes Injection-Locked Technique

Lu, Hai‐Han; Li, Chung‐Yi; Lee, Chia-Hsien; Hsiao, Yu-Chao; Chen, and Hwan-Wen

doi:10.2528/pierl09011604

Cited by 10 publications

(9 citation statements)

References 10 publications

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“…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]. In this technology, a high optical sideband suppression ratio (OSSR) is extremely desirable for the generation of high-quality mm-wave signals.…”

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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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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“…It can be seen in Equation (8), that the optical carrier and fourth-order sidebands can be suppressed by adjusting the modulation index and introducing phase difference ∆φ between the RF driven signal of MZ-a and MZ-b. Taking the characteristics of the Bessel function into consideration, the optical sidebands higher than the sixth-order can be neglected due to their extremely small power.…”

Section: Principlementioning

confidence: 99%

“…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]. 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].…”

Section: Introductionmentioning

confidence: 99%

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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“…Multi-gigabit wireless over optical fiber networks using the radioover-Fiber (RoF) technique have emerged as a powerful solution for increasing system capacity and mobility, as well as reducing the cost of access networks [1][2][3][4][5]. Nowadays, peer-to-peer (P2P) communication between wireless users in RoF access networks is increasingly useful due to the growth of applications such as multimedia communications, and voice and video over IP [6].…”

Section: Introductionmentioning

confidence: 99%

A Novel Architecture for Peer-to-Peer Interconnect in Millimeter-Wave Radio-Over-Fiber Access Networks

Liu¹,

Zhang

Fan³

et al. 2012

PIER

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Abstract-A novel peer-to-peer (P2P) interconnection architecture in a 60-GHz millimeter-wave (mm-wave) radio-over-fiber (RoF) access network is proposed for the first time. In this scheme, the beating of the lightwaves for downlink and P2P transmissions at the photodiode (PD) can provide signal up-conversion for both signals. Phase noise and frequency instability between the two independent lightwaves can be eliminated by a self-heterodyned radio frequency (RF) receiver (envelope detector) located on the user terminal, which can also downconvert simultaneously the two mm-wave signals to their associated intermediate frequencies. No high-frequency clock sources or other high bandwidth devices are required for signal up/down-conversions. A proof-of-concept experimental demonstration has also been carried out. Error-free transmission of the 1-Gb/ signals is achieved over 50-km fiber (downlink) or 25-km fiber (P2P) plus 4-m air link.

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Radio-Over-Fiber Transport Systems Based on DFB Ld With Main and -1 Side Modes Injection-Locked Technique

Cited by 10 publications

References 10 publications

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

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

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

A Novel Architecture for Peer-to-Peer Interconnect in Millimeter-Wave Radio-Over-Fiber Access Networks

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