
[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.
本文主要總結了全光通信技術、光交換與全光網技術最新研究和發展等方面的内容。
Optical communication is gaining its popularity in telecommunication, most obvious evident is the increase in demand of a large variety of fiber optic components.
隨着光通信産品的用途越來越廣泛,對光纖組件的需求也越來越大,而光纖連接器就是其中的一類。
To study light scattering characteristics and polarization state changes in the atmosphere, is to resolve the relative problems of the atmospheric optical communication.
研究大氣粒子的光散射特性及大氣對散射光偏振态的影響,是為了解決大氣激光通信中的相關問題。
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)是光纖通信系統尤其是偏振模色散補償和相幹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.
光纖通信系統仍處于開發和運用過程中。
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.
介紹了前向糾錯(FEC)技術在高速光通信系統中應用的必要性、特點、實現方式,以及其對系統性能的改善。
The trend of the communication in the future is All-optical communication. And the key technology of the optical fiber communication is DWDM technology.
全光通信是未來通信的發展趨勢,密集波分複用(DWDM)技術是光通信中的關鍵技術。
Optical communication are free from electromagnetic interference.
光電通信不受電磁的幹擾。
A new experimental system of coherent optical communication is recently accomplished at the Guilin Institute of Optical Communications in China.
一種新型的相幹光纖通信實驗系統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.
喇曼光纖激光器以其衆多的優良特性在光通信、光傳感以及視覺安全雷達、激光光譜和激光醫學等領域有廣闊的發展前景。
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.
目的是使人們對光纖通信的發展與趨勢有進一步的了解與認識,在生産與實踐中起一定的指導與參考作用。
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.
本文介紹了包層泵浦技術在光纖通信中的最新應用,并且展望了包層泵浦技術中要解決的關鍵性技術問題。
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.
數據中繼衛星光通信鍊路的計算機仿真研究是數據中繼衛星光通信項目研究的一個重要研究内容。
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、光數據存儲、傳感技術、醫學等領域的廣泛應用,近幾年來光纖激光器發展十分迅速。
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.
這種光電子學的邏輯回路與大規模集成技術完全相容,因此有希望應用于光學信息處理,光通信和光計算。
An ideal source of radiation is provided for an optical communication system.
本文為光通信系統提供了一種理想的輻射源。
It is a key problem to detect the ultrashort pulse in optical communication system.
在光纖通信系統中,超短光脈沖的檢測一直是一個重要的問題。
Coupling space light into single mode fiber is a key technology in optically preamplified space optical communication systems.
空間激光到單模光纖的耦合是光放大接收空間激光通信的一個關鍵技術。
Polarization interference optical filter proves to be an efficient kind of optical filters and has numerous applications in optical communication, optical information processing.
偏振幹涉光濾波器是光學濾波器的一個重要分支,廣泛用于光纖通信、光學信息處理等領域。
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.
研究藍綠激光在海水中的散射特性以及由散射引起的退偏現象,是為了解決水下通信、探測、成像的相關問題。
It makes many complicated all optical communication and sensing network into being, meanwhile, greatly extends applied realms of optical fiber technology.
它的出現,使許多複雜的全光通信和傳感網絡成為可能,極大的拓展了光纖技術的應用範圍。
In cable television networks of the optical communication systems, optical laser drive is a key component of the transmitter .
在有線電視網的光通信系統中,激光驅動器是光發射機的關鍵組成部分。
Laser beam's acquisition, tracking and pointing is one of key technologies of free space optical communication.
光束的捕獲、跟蹤和對準是自由空間光通信中必須解決的關鍵技術之一。
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.
高速光纖通信系統的研究是當前光通信領域的一大熱點,信道編碼技術是其中的一項關鍵技術。
As the rapid development of optical communication technology, high performance lasers are in great demand.
隨着光纖通信技術的飛速發展,對使用光源的要求也越來越高。
The concept and function of Acquisition, Tracking and Pointing (ATP) system in space optical communication are described.
描述了空間光通信中的捕獲、跟蹤與瞄準(ATP)系統的概念、作用。
光通信(optical communication)是一種利用光波作為信息載體的通信技術,通過調制光信號的強度、相位或頻率實現數據傳輸。其核心原理基于電磁波譜中紅外線至可見光波段(波長通常在800-1600納米)的高頻特性,可在光纖或自由空間中實現大帶寬、低損耗的信息傳輸。
光源與調制
半導體激光器(如DFB激光器)和發光二極管(LED)是主要光源,通過直接調制或外調制技術将電信號轉換為光信號。根據IEEE Photonics Society的研究,現代密集波分複用(DWDM)系統單光纖可實現超過100 Tbps的傳輸容量。
傳輸介質
石英光纖憑借其低損耗(0.2 dB/km@1550nm)和抗電磁幹擾特性成為主流介質,其結構包含纖芯、包層和塗層,通過全反射原理導光。國際電信聯盟(ITU)制定的G.652至G.657系列标準規範了光纖性能參數。
檢測與解碼
接收端采用雪崩光電二極管(APD)或PIN光電二極管将光信號還原為電信號,配合前向糾錯(FEC)技術可将誤碼率降至10⁻¹⁵量級。
該技術自1966年高锟提出低損耗光纖理論後實現商用突破,現已成為5G前傳網絡、海底電纜(如跨太平洋FASTER系統)和數據中心互聯的核心技術。根據《光纖通信系統》(Govind P. Agrawal著)記載,2024年單模光纖的實驗室傳輸距離已達10,000公裡無中繼。
Optical Communication(光通信) 是一種利用光波作為信息載體的通信技術,主要應用于高速、大容量數據傳輸。以下從技術原理、核心組件和應用領域三方面詳細解釋:
光信號傳輸
通過調制光波(如激光或LED光源)的強度、頻率或相位,将電信號轉換為光信號。光信號在光纖中通過全反射原理傳輸,損耗極低(約0.2 dB/km),適合長距離通信。
多路複用技術
例如波分複用(WDM),将不同波長的光信號合并到同一光纖中傳輸,顯著提升帶寬利用率。
$$
P{text{out}} = P{text{in}} cdot e^{-alpha L}
$$
其中,$alpha$為光纖衰減系數,$L$為傳輸距離。
如需進一步了解光通信協議(如SDH、OTN)或具體設備(如光放大器),可提供補充說明。
air conditionersecondlysoldhammer away atlet slipcarve outshortlistfalconachromatopsiaauthoringbedrockcombativelyfatiguedfrowziestgrimmestparticulatePCBa couple of daysAmerican Samoaan average ofbathing suitcommercial intercoursephysical labourregulated marketbookplatebountifulchlorinatorfoametheteropolymerlysophospholipase