LiDAR integrated IR OWC system with the abilities of user localization and high-speed data transmission

Li, Zhi; Li, Yicong; Zang, Zihan; Han, Yaqi; Wu, Lican; Li, Mutong; Li, Qian; Fu, H. Y.

doi:10.1364/oe.454266

Cited by 7 publications

(7 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Specifically, the emitting collimator holds a fixed focal length, while the receiving collimator features an adjustable focal length. 25 mm 20.00 mm 22.5 mm X 0.54 Zoom Col. 7 1.2-inch Adjustable 20.5 mm X 0.25 1 Outer Diameter; 2 Focal length; 3 Clear Aperture; 4 Numerical Aperture; 5 Collimator with a fixed focal length; 6 Focusing lens; 7 Collimator with a adjustable focal length.…”

Section: Basic Formulas Of Gaussian Beams and Parameters Of Opticsmentioning

confidence: 99%

“…Nevertheless, precise tracking and steering techniques are essential to eliminate any misalignment between transceivers. A localization accuracy of 0.038 • and a wide field of view (FOV) of 70 • × 70 • have been experimentally demonstrated by utilizing light detection and ranging (LiDAR) [7,8]. Nonetheless, the integration of LiDAR with OWC introduces complexity and high costs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Two-Stage Link Loss Optimization of Divergent Gaussian Beams for Narrow Field-of-View Receivers in Line-of-Sight Indoor Downlink Optical Wireless Communication (Invited)

Yan

Wang

et al. 2023

Photonics

View full text Add to dashboard Cite

The predominant focus of research in high-speed optical wireless communication (OWC) lies in line-of-sight (LOS) links with narrow infrared beams. However, the implementation of precise tracking and steering necessitates delicate active devices, thereby presenting a formidable challenge in establishing a cost-effective wireless transmission. Other than using none-line-of-sight (NLOS) links with excessive link losses and multi-path distortions, the simplification of the tracking and steering process can be alternatively achieved through the utilization of divergent optical beams in LOS. This paper addresses the issue by relaxing the stringent link budget associated with divergent Gaussian-shaped optical beams and narrow field-of-view (FOV) receivers in LOS OWC through the independent optimization of geometrical path loss and fiber coupling loss. More importantly, the geometrical path loss is effectively mitigated by modifying the transverse intensity distribution of the optical beam using manipulations of multi-mode fibers (MMFs) in an all-fiber configuration. In addition, the sufficiently excited higher order modes (HOMs) of MMFs enable a homogenized distribution of received optical powers (ROPs) within the coverage area, which facilitates the mobility of end-users. Comparative analysis against back-to-back links without free-space transmission demonstrates the proposed scheme’s ability to achieve low power penalties. With the minimized link losses, experimental results demonstrate a 10 Gbps error-free (BER < 10−13) LOS OWC downlink transmission at 2.5 m over an angular range of 10° × 10° without using any optical pre-amplifications at a typical PIN receiver. The proposed scheme provides a simple and low-cost solution for high-speed and short-range indoor wireless applications.

show abstract

Section: Basic Formulas Of Gaussian Beams and Parameters Of Opticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two-Stage Link Loss Optimization of Divergent Gaussian Beams for Narrow Field-of-View Receivers in Line-of-Sight Indoor Downlink Optical Wireless Communication (Invited)

Yan

Wang

et al. 2023

Photonics

View full text Add to dashboard Cite

show abstract

“…In addition, the SOI platform not only offers excellent performance characteristics, but also enables low-cost, large-scale chip fabrication with CMOS manufacturing processes. Thus, SOI devices are widely used in numerous applications such as optical communications, quantum signal processing, three-dimensional imaging, and optical phase modulators [12][13][14][15][16][17][18]. The unique advantages conferred by SOI establish it as an advanced silicon photonic integration platform, thereby paving boundless pathways for the evolution of optoelectronics.…”

Section: Introductionmentioning

confidence: 99%

Subwavelength grating waveguide antenna based on interleaved groove structure

Chen,

Liu,

et al. 2024

Eng. Res. Express

View full text Add to dashboard Cite

Integrated optical antennas are essential components of optical phased arrays for applications in light detection and ranging technology. To achieve larger detection distances, wider detection ranges, and higher scanning resolutions, it is imperative to employ millimeter-scale or longer effective lengths to achieve a narrow beam width, coupled with high radiation efficiency. In the high refractive index contrast silicon photonics platform, achieving a narrow far-field beam width and high radiation efficiency simultaneously is a formidable challenge. In the article, a subwavelength grating waveguide antenna with interleaved grooved lateral radiating block arrays is proposed. The simulation result shows that an effective length of about 3.3 mm is attained, with a corresponding far-field beam width is 0.02°, and a radiation efficiency of 0.785 at the wavelength of 1550 nm. It is also found that the crosstalk between the adjacent grating antennas designed in the range of 1.49 μm ~ 1.61 μm is less than -15.6 dB.

show abstract

“…Furthermore, a highly accurate beam‐steering method based on frequency‐modulated continuous‐wave (FMCW) light detection a ranging (LIDAR) is proposed in ref. [24] to achieve a 17 Gbps IR‐OWC link. The large bandwidth of IR‐beam lasers makes it possible to utilise the well‐known TDMA technique to support more users which is simpler than non‐orthogonal multiple access and multi‐user multiple antenna schemes.…”

Section: Introductionmentioning

confidence: 99%

Fairness analysis of indoor multi‐user communications through steerable IR‐beam

Masoumi

Johar

Salehiyan

et al. 2023

IET Optoelectronics

View full text Add to dashboard Cite

Downlink data transmission of multi-user indoor optical wireless communications and its corresponding fairness analysis is studied by the authors. It is assumed that access points (APs) may use infrared beam (IR-beam) laser or light emitting diodes (LEDs) for data transmissions. For the case of APs with IR-beams, since the bandwidth of the transmitted optical signal can be very large than that of the LED's, a typical time-division multiple access (TDMA) scheme is utilised to serve multiple users and the respective achievable rates are derived. Then, for a general fairness-scheduling utility function with the capability of adjusting the degree of fairness known as α-proportional fairness, optimal timesharing coefficients are analytically derived in closed-forms. To compare the performance of the IR-based communications for the LED-based APs, two non-cooperative and cooperative data transmission schemes are also studied and the corresponding achievable rates are presented based on the classical superposition coding. Finally, to compare the performance of the two types of APs, per user data rate of the proposed systems are compared through numerical results for different scenarios to highlight advantages and drawbacks of the two types of APs. Also, by considering the Jain's index as a fairness metric, the impact of the system parameters on the fairness is discussed through numerical results. K E Y W O R D S 5G mobile communication, laser beam applications, optical communication | INTRODUCTIONThanks to the large bandwidth of optical signals, it is possible to provide users with high-data rate access via wireless optical signaling instead of the radio frequency (RF) . Also, in contrast to RF waves that can be easily eavesdropped, due to the directive and limited free space propagation range of the optical signals, optical wireless communication (OWC) has gained research and practical interests to provide safer, that is, non-electromagnetic radiations, high-rate, reliable and secure communications.To provide high-rate indoor access to the users, one of the promising solutions is to utilise the low-cost and illuminating LEDs as access points (APs) for downlink data transmissions [1,2]. This technique is known as visible light communications (VLC) and it is thoroughly studied in the literature from different perspectives [3][4][5][6][7][8][9][10][11][12][13][14]. The weak signal power received from reflected paths and susceptibility of the OWC to blockages, however, makes it hard to provide almost even quality of service in different locations in a room using OWC. Therefore, it is essential to optimise the design parameters such that all users are evenly served no matter where in the room they are located. Hence, in this paper, we aim to analyse ways to fairly serve users in different locations of a room. Now we provide a literature review of the existing works for VLC. In ref [3], the maximisation of the achievable downlink sum-rate of a VLC-based distributed multiple-input multipleoutput (D-MIMO) communications under p...

show abstract

LiDAR integrated IR OWC system with the abilities of user localization and high-speed data transmission

Cited by 7 publications

References 29 publications

Two-Stage Link Loss Optimization of Divergent Gaussian Beams for Narrow Field-of-View Receivers in Line-of-Sight Indoor Downlink Optical Wireless Communication (Invited)

Two-Stage Link Loss Optimization of Divergent Gaussian Beams for Narrow Field-of-View Receivers in Line-of-Sight Indoor Downlink Optical Wireless Communication (Invited)

Subwavelength grating waveguide antenna based on interleaved groove structure

Fairness analysis of indoor multi‐user communications through steerable IR‐beam

Contact Info

Product

Resources

About