Analysis of the Additional Modulation of Semiconductor Lasers Using Optical Heterodyne Techniques

Zhu, Ning Hua; Zhang, Bang Hong; Wen, Ji Min; Li, Hao; Li, Liang; Chen, Wei; Zhang, Yan; Xie, Liang

doi:10.1109/lpt.2007.912515

Cited by 1 publication

(4 citation statements)

References 8 publications

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“…e square-law PD is used to beat the frequency of the two signals [31]. e basic idea of optical heterodyne beat frequency is to generate mmwave signal whose carrier frequency is the difference of two lasers frequency [32].…”

Section: Optical Heterodynementioning

confidence: 99%

“…After entering PD, the photocurrent generated by the two photo beat can be expressed as [31][32][33]…”

Section: Advances In Condensed Matter Physicsmentioning

confidence: 99%

“…e last item is the required mm-wave information. e required frequency can be obtained by controlling the optical frequency difference between the two lasers [32,34].…”

Section: Advances In Condensed Matter Physicsmentioning

confidence: 99%

“…Vector millimeter-wave signals with carrier suppression can be generated by a dual-arm Mach-Zehnder modulator [30][31][32][33][34][35][36][37], and the schematic diagram is shown in Figure 7.…”

Section: Vector Signals Generation Based On External Modulationmentioning

confidence: 99%

See 3 more Smart Citations

Review on the Millimeter-Wave Generation Techniques Based on Photon Assisted for the RoF Network System

Xiao

Zhao

Feng

et al. 2020

Advances in Condensed Matter Physics

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With the development trend of wireless and broadband in the communication link and even the whole information industry, the demand of high-frequency microwave bandwidth has been increasing. The RoF network system solves the problem of spectrum congestion in low-frequency band by providing an effective technology for the distribution of high-frequency microwave signals over optical fiber links. However, the traditional mm-wave generation technique is limited by the bandwidth of electronic devices. It is difficult to generate high-frequency and low-phase noise mm-wave signals with pure electrical components. The mm-wave communication technology based on photon assisted can overcome the bandwidth bottleneck of electronic devices and provide the potential for developing the low-cost infrastructure demand of broadband mobile services. This paper will briefly explain the characteristics of the RoF network system and the advantages of high-frequency mm-wave. Then we, respectively, introduce the modulation schemes of RoF mm-wave generation based on photon assisted including directly modulated laser (DML), external modulation, and optical heterodyne. The review mainly focuses on a variety of different mm-wave generation technologies including multifrequency vector mm-wave. Furthermore, we list several approaches to realize the large capacity data transmission techniques and describe the digital signal processing (DSP) algorithm flow in the receiver. In the end, we summarize the RoF network system and look forward to the future.

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Section: Optical Heterodynementioning

confidence: 99%

“…After entering PD, the photocurrent generated by the two photo beat can be expressed as [31][32][33]…”

Section: Advances In Condensed Matter Physicsmentioning

confidence: 99%

“…e last item is the required mm-wave information. e required frequency can be obtained by controlling the optical frequency difference between the two lasers [32,34].…”

Section: Advances In Condensed Matter Physicsmentioning

confidence: 99%