
[通信] 光通信
This paper briefly introduces the technique of all-optical communication and the new development in the optical exchange and all-optical network.
本文主要总结了全光通信技术、光交换与全光网技术最新研究和发展等方面的内容。
Optical communication is gaining its popularity in telecommunication, most obvious evident is the increase in demand of a large variety of fiber optic components.
随着光通信产品的用途越来越广泛,对光纤组件的需求也越来越大,而光纤连接器就是其中的一类。
To study light scattering characteristics and polarization state changes in the atmosphere, is to resolve the relative problems of the atmospheric optical communication.
研究大气粒子的光散射特性及大气对散射光偏振态的影响,是为了解决大气激光通信中的相关问题。
Polarization Controller (PC) is an indispensable passive component for SOP control in Optics Communication System especially in PMD and coherent optical communication systems.
偏振控制器(PC)是光纤通信系统尤其是偏振模色散补偿和相干光通信不可少的偏振态控制元件。
Optical communication system is still in the process of exploitation and application.
光纤通信系统仍处于开发和运用过程中。
This paper introduces the importance, characteristic and implementation of FEC in high-speed fiber-optical communication. At last, briefly explains the improvements for the system performance.
介绍了前向纠错(FEC)技术在高速光通信系统中应用的必要性、特点、实现方式,以及其对系统性能的改善。
The trend of the communication in the future is All-optical communication. And the key technology of the optical fiber communication is DWDM technology.
全光通信是未来通信的发展趋势,密集波分复用(DWDM)技术是光通信中的关键技术。
Optical communication are free from electromagnetic interference.
光电通信不受电磁的干扰。
A new experimental system of coherent optical communication is recently accomplished at the Guilin Institute of Optical Communications in China.
一种新型的相干光纤通信实验系统最近在桂林激光通信研究所完成。
According to its good characteristics, Raman Fiber Laser (RFL) plays an increasing role in Optical Communication system, Optical Sensing, Eye-safe Lidars, Laser Spectrum and Laser Medicine.
喇曼光纤激光器以其众多的优良特性在光通信、光传感以及视觉安全雷达、激光光谱和激光医学等领域有广阔的发展前景。
The goal of this paper will be to help us know the development tendency of optical communication, and operate the guidance and reference in the production and practice.
目的是使人们对光纤通信的发展与趋势有进一步的了解与认识,在生产与实践中起一定的指导与参考作用。
We introduce the newest applications of cladding pump technology in optical communication in this paper, and expect the key technological problems to be resolved on cladding pump technology.
本文介绍了包层泵浦技术在光纤通信中的最新应用,并且展望了包层泵浦技术中要解决的关键性技术问题。
The simulation of optical communication between data relay satellites is an important content of the research project of the optical communication between data relay satellites.
数据中继卫星光通信链路的计算机仿真研究是数据中继卫星光通信项目研究的一个重要研究内容。
With the wide application in optical communication, optical data storage, sensor technology, medicine and so on, the optic fiber lasers develop very fast.
由于在光通信、光数据存储、传感技术、医学等领域的广泛应用,近几年来光纤激光器发展十分迅速。
This kind of optoelectronic logic circuit is fully compatible with VLSI technique and therefore promising for the application to optical signal processing, optical communication and optical computing.
这种光电子学的逻辑回路与大规模集成技术完全相容,因此有希望应用于光学信息处理,光通信和光计算。
An ideal source of radiation is provided for an optical communication system.
本文为光通信系统提供了一种理想的辐射源。
It is a key problem to detect the ultrashort pulse in optical communication system.
在光纤通信系统中,超短光脉冲的检测一直是一个重要的问题。
Coupling space light into single mode fiber is a key technology in optically preamplified space optical communication systems.
空间激光到单模光纤的耦合是光放大接收空间激光通信的一个关键技术。
Polarization interference optical filter proves to be an efficient kind of optical filters and has numerous applications in optical communication, optical information processing.
偏振干涉光滤波器是光学滤波器的一个重要分支,广泛用于光纤通信、光学信息处理等领域。
To study blue-green laser light scattering and polarization status changes in the ocean, is used to resolve the relative problem of optical communication, detection and imaging under water.
研究蓝绿激光在海水中的散射特性以及由散射引起的退偏现象,是为了解决水下通信、探测、成像的相关问题。
It makes many complicated all optical communication and sensing network into being, meanwhile, greatly extends applied realms of optical fiber technology.
它的出现,使许多复杂的全光通信和传感网络成为可能,极大的拓展了光纤技术的应用范围。
In cable television networks of the optical communication systems, optical laser drive is a key component of the transmitter .
在有线电视网的光通信系统中,激光驱动器是光发射机的关键组成部分。
Laser beam's acquisition, tracking and pointing is one of key technologies of free space optical communication.
光束的捕获、跟踪和对准是自由空间光通信中必须解决的关键技术之一。
The research of high speed transmission system is a hot topic in the optical communication field and one of the key technologies is channel coding.
高速光纤通信系统的研究是当前光通信领域的一大热点,信道编码技术是其中的一项关键技术。
As the rapid development of optical communication technology, high performance lasers are in great demand.
随着光纤通信技术的飞速发展,对使用光源的要求也越来越高。
The concept and function of Acquisition, Tracking and Pointing (ATP) system in space optical communication are described.
描述了空间光通信中的捕获、跟踪与瞄准(ATP)系统的概念、作用。
光通信(optical communication)是一种利用光波作为信息载体的通信技术,通过调制光信号的强度、相位或频率实现数据传输。其核心原理基于电磁波谱中红外线至可见光波段(波长通常在800-1600纳米)的高频特性,可在光纤或自由空间中实现大带宽、低损耗的信息传输。
光源与调制
半导体激光器(如DFB激光器)和发光二极管(LED)是主要光源,通过直接调制或外调制技术将电信号转换为光信号。根据IEEE Photonics Society的研究,现代密集波分复用(DWDM)系统单光纤可实现超过100 Tbps的传输容量。
传输介质
石英光纤凭借其低损耗(0.2 dB/km@1550nm)和抗电磁干扰特性成为主流介质,其结构包含纤芯、包层和涂层,通过全反射原理导光。国际电信联盟(ITU)制定的G.652至G.657系列标准规范了光纤性能参数。
检测与解码
接收端采用雪崩光电二极管(APD)或PIN光电二极管将光信号还原为电信号,配合前向纠错(FEC)技术可将误码率降至10⁻¹⁵量级。
该技术自1966年高锟提出低损耗光纤理论后实现商用突破,现已成为5G前传网络、海底电缆(如跨太平洋FASTER系统)和数据中心互联的核心技术。根据《光纤通信系统》(Govind P. Agrawal著)记载,2024年单模光纤的实验室传输距离已达10,000公里无中继。
Optical Communication(光通信) 是一种利用光波作为信息载体的通信技术,主要应用于高速、大容量数据传输。以下从技术原理、核心组件和应用领域三方面详细解释:
光信号传输
通过调制光波(如激光或LED光源)的强度、频率或相位,将电信号转换为光信号。光信号在光纤中通过全反射原理传输,损耗极低(约0.2 dB/km),适合长距离通信。
多路复用技术
例如波分复用(WDM),将不同波长的光信号合并到同一光纤中传输,显著提升带宽利用率。
$$
P{text{out}} = P{text{in}} cdot e^{-alpha L}
$$
其中,$alpha$为光纤衰减系数,$L$为传输距离。
如需进一步了解光通信协议(如SDH、OTN)或具体设备(如光放大器),可提供补充说明。
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