Laser based underwater communication systems

Giuliano, Giovanni; Viola, Shaun; Watson, Scott; Laycock, Leslie; Rowe, Duncan; Kelly, Anthony E.

doi:10.1109/icton.2016.7550382

Cited by 15 publications

(10 citation statements)

References 12 publications

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“…[1][2][3][4][5] Broadarea multimode LDs emitting at 525 nm and 1 W of optical power are now commercially available, 6) and applications such as solid-state lighting 7) and laser projectors 4) are driving the need for these green emitters. Other specialized applications including sensing, 8) atomic clocks, 9) and underwater optical communications 10) require not just a conventional green laser but a narrow-line or single-wavelength green source. Currently, these are scarce and based on external and/ or outsized optical components.…”

mentioning

confidence: 99%

Narrow-line InGaN/GaN green laser diode with high-order distributed-feedback surface grating

Holguín‐Lerma

Ooi

2019

Appl. Phys. Express

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We demonstrate narrow-line green laser emission at 513.85 nm with a linewidth of 31 pm and side-mode suppression ratio of 36.9 dB, operating under continuous-wave injection at room temperature. A high-order (40th) distributed-feedback surface grating fabricated on multimode InGaN-based green laser diodes via a focused ion beam produces resolution-limited, single-mode lasing with an optical power of 14 mW, lasing threshold of 7.27 kA cm−2, and maximum slope efficiency of 0.32 W A−1. Our realization of narrow-line green laser diodes opens a pathway toward efficient optical communications, sensing, and atomic clocks.

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confidence: 99%

Narrow-line InGaN/GaN green laser diode with high-order distributed-feedback surface grating

Holguín‐Lerma

Ooi

2019

Appl. Phys. Express

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“…Extinction coefficient is the transmission wavelength which minimizes the propagation loss and it varies for different types of water. It is obtained by adding both absorption and scattering coefficients [34] a and b.…”

Section: A Scattering and Absorption Issuesmentioning

confidence: 99%

A Systematic Review on Practical Considerations, Recent Advances and Research Challenges in Underwater Optical Wireless Communication

Mohsan¹,

Hasan²,

Mazinani³

et al. 2020

IJACSA

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Underwater Optical Wireless Communication (UOWC) has gained significant attraction in many underwater activities because of its high bandwidth as compared to radio frequency and acoustic technologies. Underwater Optical Wireless Communication (UOWC) has high stature in underwater observation, exploration and monitoring applications. However, due to complex nature of ocean water, several practical challenges exist in deployment of UOWC links. Qualitative and effective research has been carried out in UOWCs from last few decades. Ambition behind this research systematic study is to provide a comprehensive survey on latest research in UOWCs. Herein, we provide a brief discussion on major research challenges, limitations and development in UOWCs. We provide a periodical review on UOWC issues and potential challenges highlighted in previous studies. In this paper, we have also investigated research methods to gain attention of research fraternity towards future technologies and challenges on the basis of existing approaches. Thus, it is our foremost requirement to provide state-of-the-art analysis of existing UOWCs. Significant deliberation has been provided with recent bibliography.

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“…The blue laser in the region of 470-490 nm is well suitable for the open ocean applications due to its quite high transmission in deep seawater [4]. Moreover, the wavelength of 486 nm matches with the solar H-β Fraunhofer line, so it can help lidar systems to improve their signal-tonoise ratios [5]. Since the 486 nm wavelength was in the optimal spectral range for oceanic lidar [6], the generation of 486 nm blue pulsed laser with high peak power output has recently received much attentions.…”

Section: Introductionmentioning

confidence: 99%

486 nm pulsed Nd:YLF laser with intracavity sum-frequency mixing

Zhang¹,

Ma²,

Lu³

et al. 2023

Laser Phys. Lett.

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An intracavity sum-frequency pulsed laser emitting at 486 nm was demonstrated in a combined cavity for two electro-optically Q-switched Nd:YLF fundamental lasers emitting at 908 nm and 1047 nm respectively. Pumped by two 806 nm LDs at 50 Hz repetition rate, while the intracavity pulse energy reached 6.25 mJ at 908 nm and 2.57 mJ at 1047 nm, maximum output pulse energy of 0.26 mJ at 486.4 nm wavelength was successfully achieved by intracavity sum-frequency. The corresponding spectral bandwidth was less than 0.08 nm, and the pulse width was about 11.8 ns. The peak power of the blue laser pulse was up to 21.8 kW, and the results provided a new blue pulsed laser source around 486 nm for ocean detection applications.

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Laser based underwater communication systems

Cited by 15 publications

References 12 publications

Narrow-line InGaN/GaN green laser diode with high-order distributed-feedback surface grating

Narrow-line InGaN/GaN green laser diode with high-order distributed-feedback surface grating

A Systematic Review on Practical Considerations, Recent Advances and Research Challenges in Underwater Optical Wireless Communication

486 nm pulsed Nd:YLF laser with intracavity sum-frequency mixing

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