Analysis of the carrier suppressed single sideband modulation for long distance optical communication systems

Paloi, Fadil; Haxha, Shyqyri

doi:10.1016/j.ijleo.2018.02.007

Cited by 23 publications

(9 citation statements)

References 19 publications

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“…The other output of the optical splitter is given as input to a second DD‐MZM. As discussed in Paloi and Haxha, 20 the constant phase shift of 180 degrees is required to suppress the carrier that is obtained at the outputs of the two DD‐MZMs. Both the modulators have an extinction ratio of 50 dB and are biased at null‐point to generate optical double sideband suppressed carrier (DSB‐SC) signals at the output.…”

Section: Simulation Setupmentioning

confidence: 99%

“…The electrical signal applied at the terminals of the two modulators are shifted by 90 degrees with respect to each other. By combining the two optical DSB‐SC signals through an optical cross‐coupler, we obtain an optical SSB‐SC signal at the output of the coupler 20 . The optical SSB‐SC signal is coupled with two fixed frequency optical laser sources centered at f LP = 193.1 THz and f HP = 193.115 THz, respectively.…”

Section: Simulation Setupmentioning

confidence: 99%

“…By combining the two optical DSB-SC signals through an optical cross-coupler, we obtain an optical SSB-SC signal at the output of the coupler. 20 The optical SSB-SC signal is coupled with two fixed frequency optical laser sources centered at f LP = 193.1 THz and f HP = 193.115 THz, respectively. The output powers of laser f LP and f HP are 5 and 12 dBm, respectively.…”

Section: Working Principlementioning

confidence: 99%

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A novel wideband radio frequency measurement based on photonic signal processing

Ammar

Aljohani

Ghafoor

2020

Micro & Optical Tech Letters

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Photonic signal processing is a suitable alternative of electronics based processing for wideband frequency detection. We propose a novel technique for the detection of a wide range of frequencies based on photonic signal processing. The unknown frequency to be measured is used to modulate a tunable optical source by implementing single sideband suppressed carrier modulation. The modulated signal is combined with two fixed frequency optical carriers to perform heterodyne detection. The frequency of the tunable laser source is swept until significant power of the beat signal is observed after photodetection. A mathematical expression is presented that can be used to measure the frequency of the unknown electrical signal based on value of the center frequency of tunable laser source. The effect of increasing laser linewidth up to 100 MHz and instantaneous shift in laser center frequency up to 200 MHz has also been demonstrated. It has been shown that the proposed technique can measure almost any radio frequency by simply varying the frequency of the tunable laser source.

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Section: Simulation Setupmentioning

confidence: 99%

Section: Simulation Setupmentioning

confidence: 99%

Section: Working Principlementioning

confidence: 99%

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A novel wideband radio frequency measurement based on photonic signal processing

Ammar

Aljohani

Ghafoor

2020

Micro & Optical Tech Letters

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“…23,24 The disturbances associated with the platform motion and mechanical vibration can be attenuated by the tracking loop with the combination of coarse and fine tracking mode. [25][26][27] A number of papers have introduced the design of such tracking system. This paper will describe a spatial tracking system with structure design consideration, and the beaconless acquisition algorithm, also including the corresponding experimental results.…”

Section: Introductionmentioning

confidence: 99%

Research on bidirectional beam tracking and performance analysis of optical communication system with microvibrations

Teng,

Qin,

Zhang

2023

Micro & Optical Tech Letters

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The impact of tracking errors over the vibration interference is investigated. A novel expression is presented for the bidirectional laser tracking mechanism which takes in account both periscope communication terminal and beam acquisition process with beaconless technology. In this paper, platform microvibrations are measured and compensated to improve the tracking characteristics of the optical communication terminal. An experiment was conducted to verify the high precision tracking system with the combination of coarse and fine tracking technologies, which represents that the fine tracking error is suppressed to 2.1 μrad. This high precision implementation demonstrates the effectiveness of the tracking control loop, and will contribute to the space laser communication.

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“…[5] to [6] required highly calibrated coherent detector, which can increase instability of the used system. In [7] Various methods have been demonstrated to verify the suppression of IMD3 spurious components & to get the analytical investigation about the enhancement of SFDR [9][10][11][12][13][14][15][16][17][18]. MZM is the commonly used modulator in the RoF link and its inherent nature to exploiting the non-linear behaviour, but we are using this one due to its high stability and spectral purity.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of DD-DPMZM based RoF link for Emerging Wireless Networks

Tamrakar

Singh

Kumar

2022

Preprint

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This paper demonstrates the analytical approach of Linearized Radio over Fiber (RoF) link based on Dual-Drive Dual Parallel Mach Zehnder Modulator (DD-DPMZM) by properly adjusting the phase shifters and biasing of the Mach Zehnder Modulator (MZM). Two input RF tones at 7 and 8 GHz applied in the used RoF link. The proposed RoF link consists of Mach Zehnder Modulator (MZM), Parallel combination of Mach Zehnder Modulators, optical fiber and photodetector (PD). Third Order Intermodulation Distortions (IMD3) factor act as a major issue, which is responsible as performance degradation factor. Major sources of IMD3 spurious components have been investigated and suppressed in theoretical analysis before photodetection. The proposed method is designed with the help of OptSim simulation software, to confirm and validate the analytical analysis and simulation results. Analytical analysis & simulation results show that, 40 dB suppression found in IMD3 spurious components, and 30 dB Hz2/3 enhancement found in Spurious Free Dynamic Range (SFDR), for the proposed linearized RoF link as compared to conventional MZM RoF link.

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Analysis of the carrier suppressed single sideband modulation for long distance optical communication systems

Cited by 23 publications

References 19 publications

A novel wideband radio frequency measurement based on photonic signal processing

A novel wideband radio frequency measurement based on photonic signal processing

Research on bidirectional beam tracking and performance analysis of optical communication system with microvibrations

Performance Analysis of DD-DPMZM based RoF link for Emerging Wireless Networks

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