Transmission of 60-GHz signals over 100 km of optical fiber using a dual-mode semiconductor laser source

Wake, D.; Lima, C.R.; Davies, P.A.

doi:10.1109/68.491307

Cited by 65 publications

(16 citation statements)

References 8 publications

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“…Substituting (8)- (11) into (3) with amplitude defined as Ei = E; = rEi = rEi using suppression ratio r,.e is obtained as, e = 2ME:[coS(CO o t +tPz -tP/) + cos(COot + 9 4 -tP3)]+ 2E; cos(rorl +lftJ-Iftz) (12) (13) For the sake of simplicity, it is assumed that n J (Of)J D J "= n 4 (11 t D 4' The assumption holds good for the frequencies near 64.5 OHz. It has been observed that the above assumption does not affect the amplitude of the photocurrent component required to obtain the power signal.…”

Section: (Of)t D4) L+ X(1oo O R(1l}mentioning

confidence: 99%

“…MM-wave is expected to be a promising and important frequency for future radio communication systems and various MM-wave radio systems have been currently studied (1-2]. Recently, the frequency band of around 60 GHz is becoming one of the frequencies for such systems [3]. To support the MM-wave signals between a Central Station (CS) and a remole base station is very advantageous, because of low loss, extremely wide band width, availability of optical amplifiers, low cost of whole system, and so on [4].…”

Section: Introductionmentioning

confidence: 99%

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Dispersion Effects for a Four Component-Lightwave Source in MM-Wave Fiber Radio Systems

Arya

Sharma

Agarwala

et al. 2003

J Opt

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In this paper; an improved wlalysis of dispersion effects on a lightwave source wilh four components of differelll angular frequencies corresponding to the desired millimeter (MM)-wavejreqllency has been reponed. For optical sllbcarrier transmission. il is proposed to lise an actively Mode Locked Laser (MIL) as all oplical souree. The MM-wave power penalty due to second. third and founh order dispersion parameters has been obtained. II has been shown that the dispersion induced power penalty lies within Ihe range of 3 dB to -0.5 dB at the linear chirp of O. 137r and transmission dis/mice liP to J 0 Kms including the effect of higher -order disperSiOI1 (HOD) parameters. Further, it has been observed that dispersion induced power penalty increases with the increase in the transmission distance due to the inflilence of HOD terms. Indexing Terms: MM-wa~'e generation, Mode· Locked l..aser(MLL). Optical fiber dispersion. and higher-order dispersion.

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Section: (Of)t D4) L+ X(1oo O R(1l}mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dispersion Effects for a Four Component-Lightwave Source in MM-Wave Fiber Radio Systems

Arya

Sharma

Agarwala

et al. 2003

J Opt

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show abstract

“…For example, using fractal tuning stub [2] or U-shaped stub [3] can effectively enhance the bandwidth. However, antennas fed by microstrip lines [1][2][3] can result in misalignment because of etching on both sides of the dielectric substrate. Fortunately, this misalignment can be eliminated if CPW-fed slot antennas are employed [4,5] since etching of the slot and feeding lines is on the same side of the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…There is a strong interest in providing both broadband wireless and wired access services in the emerging optical-wireless networks [1][2][3][4][5][6][7][8][9]. We proposed a novel ROF architecture which provides not only wireless based access at carried band in high frequency, but optical fiber based access at baseband via a compact frequency mixing manner in center station.…”

Section: Introductionmentioning

confidence: 99%

Novel ROF network architecture for providing both wireless and wired broadband services

Yu¹,

Jia²,

Jian³

et al. 2007

Micro & Optical Tech Letters

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ANNs are first trained to learn the device behavior, starting from a few samples which are obtained using SFELP. The device is then designed by using the neural model and overall optimization. The efficiency and accuracy of neural models increase as a result of combining different techniques.With segmentation, the whole device is divided into small regions which are modeled separately. Thus, two main effects are attained: the number of design parameters in each region is smaller, and the behavior to be modeled smoother. It is also not necessary to model the behavior of a region if it can be computed analytically. On the other hand, the GAM decomposition in Eq. (3) allows us to simplify the behavior to be modeled; because matrix J can be computed analytically. Thus, it is only necessary to model the PGAM. If the device to be designed can be considered as lossless, the functional dependence of this matrix with frequency can be expressed through a sum of real poles. In the regions obtained as a result of segmentation, all or nearly all these poles are placed further away, because the dimensions of the regions are so small. This information is then exploited through the use of neural models that emulate the frequency modeling of reduced-order Padé models. The positions and residues of the inner poles are modeled with MLPs, as is the effect of the outer poles with the models in Eq. (8). In both cases, frequency is not an input parameter of the MLPs. Training data are extracted very efficiently from the reduced frequency models computed with SFELP. Finally, the use of many MLPs avoids the use of high complexity MLPs, whose management is largely more difficult.Several examples have been presented. Behavior of a small microwave region is illustrated in Section 7.1. In Sections 7.2 and 7.3, microwave devices are designed by using overall optimization. The CPU time required by these design processes is dramatically reduced as a consequence of using ANNs. The design results illustrate the high degree of accuracy that can be achieved using the proposed neural models. ACKNOWLEDGMENTThis work was supported by CICYT, Spain, under contract no TEC2004 -00950/TCM. REFERENCES 1. J.E. Rayas-Sánchez, EM-Based optimization of microwave circuits using artificial neural networks:

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“…Recently, a few new methods for generating optical mm-waves generation have been reported [1][2][3][4][5][6]. Optical mm-wave generation using the optical double-sideband modulation scheme has a simple configuration [2].…”

Section: Introductionmentioning

confidence: 99%

To extend delivery distance of the optical MM‐wave generated by DSB modulation and vestigial sideband filtering

Jian

Chang

2006

Micro & Optical Tech Letters

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Transmission of 60-GHz signals over 100 km of optical fiber using a dual-mode semiconductor laser source

Cited by 65 publications

References 8 publications

Dispersion Effects for a Four Component-Lightwave Source in MM-Wave Fiber Radio Systems

Dispersion Effects for a Four Component-Lightwave Source in MM-Wave Fiber Radio Systems

Novel ROF network architecture for providing both wireless and wired broadband services

To extend delivery distance of the optical MM‐wave generated by DSB modulation and vestigial sideband filtering

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