概括
我们开发了一种混合光纤/水下无线光通信 (UWOC) 系统,使用级联晶体来有效地产生绿色光. 该系统通过降低位误差率来改善数据传输,并展示了实际的7m UWOC可行性.
科学领域:
- 光学工程是指光学工程.
- 电信 电信服务 电信服务 电信服务
- 光子学 是一个光子学.
背景情况:
- 将传统的电信网络与新兴的水下无线光通信 (UWOC) 结合起来,带来了重大的技术挑战.
- 现有的第三波生成 (THG) 方法通常涉及使用离散晶体的复杂光学设置.
研究的目的:
- 提出和验证一个简化的光学模块,以有效地产生绿色光线.
- 通过混合集成来提高水下无线光通信系统的性能.
主要方法:
- 开发了一种光学模块,该模块结合了/联合化纤维放大器 (EYDFA) 和级联周期极化酸 (级联-PPLN).
- 使用级联PPLN实现了第三波生成 (THG),与离散晶体相比,简化了光学系统.
- 提出了一种非线性预补偿方法,并应用于4脉冲振幅调制 (PAM4) 信号.
主要成果:
- 在5W基本功率下,在516nm处产生了6.54mW的光学功率,转换效率为0.1308%,基本功率为5W.
- 该系统保持了THG效率和绿灯输出功率,即使在使用5公里单模光纤后.
- 对于12 Gbps的修改PAM4 (m-PAM4) 信号,比特错误率 (BER) 降低了69.3%.
- 一个7米水下无线光通信 (UWOC) 传输成功地以13.46Gbps的速度被证明是成功的.
结论:
- 拟议的混合光纤/UWOC系统,利用THG的级联晶体,提供了一种简化和高效的解决方案.
- 开发的非线性预补偿方法显著提高了高速数据传输的信号完整性.
- 证明了该系统在实际水下光通信中的可行性,为未来的应用铺平了道路.
相关概念视频
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01:21Pilot and Numeric Relaying
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01:27Traveling Waves: Lossless Lines
The provided content explores the behavior of traveling waves on single-phase lossless transmission lines. It begins with a single-phase two-wire lossless transmission line of length Δx, characterized by a loop inductance LH/m and a line-to-line capacitance C F/m. These parameters result in a series inductance LΔx and a shunt capacitance CΔx.
01:21Boundary Conditions: Lossless Lines
Consider a single-phase, two-wire, lossless transmission line terminated by an impedance at the receiving end and a source with Thevenin voltage and impedance at the sending end. The line, with length, has a surge impedance and wave velocity determined by the line's inductance and capacitance.
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
01:12Bewley Lattice Diagram
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
01:30Electronic Distance Measuring Instruments
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