640 Gbps FSO data transmission system based on orbital angular momentum beam multiplexing employing optical frequency comb

Dutta, Bubai; Sarkar, Nilanjana; Atta, Rinki; Kuiri, Bibhatsu; Santra, Saikat; Patra, Ardhendu Sekhar

doi:10.1007/s11082-021-03509-3

Cited by 19 publications

(8 citation statements)

References 21 publications

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“…The implementation of AWGs to achieve channel isolation has also been previously demonstrated for OFCG line separation of 40 and 50 GHz [15,16] , which is a separation much higher than the provided by the comb proposed in Fig. 2(a).…”

Section: Optical Filtering Analysismentioning

confidence: 84%

Design requirements for mm-wave integrated optical beamforming networks

Fito¹,

Morant²,

Llorente³

2023

Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII

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This paper proposes a mm-wave cellular flexible architecture based on a photonic beamformer network. An overview of integrated optical beamformer technology state-of-the-art is reported considering different implementations, fabrication technologies and the associated design requirements and limitations. A network architecture based on multicore-fiber (MCF) is proposed to operate as fronthaul or backhaul depending on the network configuration and user capacity dynamics. Multi-wavelength operation is achieved employing an optical frequency comb generator capable of providing several phase-correlated optical lines. Following new-radio 5G specifications, both NR 5G frequency ranges (FR) are considered in the proposed network, including FR1 at sub-6 GHz frequency bands, and FR2 in the mm-wave range from 24 to 100 GHz. The work analyses the main subsystems of the integrated photonics beamformer: the laser source which comprises an optical comb, the optical filtering and induced delay subsystems, the arrangement of MCF media to feed different antenna elements and the mm-wave generation subsystem, where optical heterodyning is proposed. The performance of these key subsystems is evaluated experimentally and analyzed by simulation when necessary to assess the proper photonic beamforming network operation.

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Section: Optical Filtering Analysismentioning

confidence: 84%

Design requirements for mm-wave integrated optical beamforming networks

Fito¹,

Morant²,

Llorente³

2023

Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII

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“…This must be taken into consideration when measuring the LM in terms of atmospheric condition, since it is crucial for the reliability of the FSO system's efficiency. We can find various LM models that provide constraints of atmospheric channels as a function of weather parameters in [42,43]. These models support the optimization of the both the transmitter and the receiver base station parameters to install an FSO communication link with the highest possible data rate in a variety of atmospheric turbulence conditions.…”

Section: Fso Communication Channelsmentioning

confidence: 99%

A Review–Unguided Optical Communications: Developments, Technology Evolution, and Challenges

et al. 2023

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This review paper discusses the complete evolution of free-space optical (FSO) communication, also known as unguided optical communication (UOC) technologies, all the way back to ancient man’s fire to today’s machine-learning-supported UOC systems. The principles, significance, and developments that have happened over the past several decades, as well as installation methodologies, technological limitations, and today’s challenges of UOCs are presented. All the subsets of UOC: FSO communication, underwater optical wireless communication (UOWC), and visible light communication (VLC), with their technology/system developments, potential applications, and limitations are reviewed. The state-of-the-art developments/achievements in (i) FSO channel effects and their mitigation techniques; (ii) radio-over-FSO techniques; (iii) wavelength division multiplexing and sub-carrier multiplexing techniques; (iv) FSO for worldwide interoperability for microwave access applications; (v) space optical satellite communication (SOSC); (vi) UWOC; (vii) photoacoustic communication (PAC); (viii) light-fidelity; (ix) VLC; (x) vehicular VLC (V2LC); and (xi) optical camera communication are reviewed. In addition, the current developments on emerging technologies such as artificial intelligence (to improve the performance of UOC systems), energy harvesting (for the effective utilization of UOC channels), and near-future communication network scenarios (mandatory for secured broadband digital links) are covered. Finally, in brief, to achieve the full potential of UOC systems, challenges that require immediate research attention are summarized.

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“…While the MZMs connected in the parallel configuration exhibit the advantages of simplified complexity and improved efficiency for frequency multiplication, the cascaded configuration of the MZMs provides the merits of low RF driving voltage requirements, flat optical spectrum, and enhanced modulation depth elevating the generation of higher order sidebands desired for high FMF 30,31 . Comprising these merits, the cascaded MZMs structure finds wide applications in various domains like generation of the frequency combs and high‐frequency mm‐wave signals using frequency multiplication 29,32,33 …”

Section: Introductionmentioning

confidence: 99%

“…30,31 Comprising these merits, the cascaded MZMs structure finds wide applications in various domains like generation of the frequency combs and high-frequency mm-wave signals using frequency multiplication. 29,32,33 Numerous mm-wave generation schemes offering the FMF of 12 have been proposed in the recent literature. In Shih et al, 26 a parallel-MZM structure along with the FWM effect using SOA is utilized to obtain the sixth-order sidebands resulting in an FMF of 12 at the receiving end.…”

mentioning

confidence: 99%

Photonic generation of frequency 12‐tupling millimeter‐wave based on three cascaded‐MZMs and polarization multiplexing

Rani,

Kedia

2024

Int J Communication

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SummaryOptical millimeter‐wave generation is a predominant approach for the generation of high‐quality carrier signals for future wireless transmissions. This paper proposes an optical frequency 12‐tupling millimeter‐wave generation scheme using three cascaded‐MZMs assisted by polarization multiplexing for carrier suppression. A three‐stage MZM architecture produces the desired sixth‐order sidebands along with the undesired carrier signal. The proper adjustment of polarization direction and angle of polarization rotation lead to the effective suppression of the undesired optical carrier signal. A comprehensive mathematical analysis has been accomplished to evaluate the system's performance, and the obtained results are also validated through simulation findings. The derived results demonstrate that the proposed system is capable of operating over a broad modulation index range extending from 1.5 to 4.5, thereby relaxing the stringent requirements for a constant modulation index. The proposed system generates high‐purity mm‐wave signals with an OSSR of 62.06 dB and an RFSSR of 54.79 dB at a modulation index of 2.6. Moreover, it is also validated that even if the system parameters like modulation index, polarizer rotation angle, and phase difference among RF driving signals deviate from their ideal values to a certain degree, the system performance remains acceptable. The involvement of polarization technique, omission of wavelength‐dependent devices, and a large modulation index operating range make this methodology readily appealing for implementation in radio‐over‐fiber transmissions.

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640 Gbps FSO data transmission system based on orbital angular momentum beam multiplexing employing optical frequency comb

Cited by 19 publications

References 21 publications

Design requirements for mm-wave integrated optical beamforming networks

Design requirements for mm-wave integrated optical beamforming networks

A Review–Unguided Optical Communications: Developments, Technology Evolution, and Challenges

Photonic generation of frequency 12‐tupling millimeter‐wave based on three cascaded‐MZMs and polarization multiplexing

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