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Analysis of Intensity Modulation and Switched Fault Techniques for Different Optical Fiber Cables

机译：不同光缆强度调制和故障切换技术分析

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Fiber optics is the fastest and reliable means of transferring large amounts of data Optical fiber links are used for local area networks to world wide data communication. Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. Digital optical communications explores the practical applications of this union and applies digital modulation techniques to optical communications systems. Intensity modulation is a modulation technique in which the optical output power of a source is varied in accordance with some characteristic of the modulating signal. Fiber optics trainer ST 2502, which is a single board fiber optic transmitter receiver module providing two independent fiber optic communication links, is used in the present work. It is used to study and analyze the analog & digital signals modulation in relation to the losses in optical fiber. This work intends to obtain an intensity modulation of a digital signal transmitted over fiber optic cable and demodulate the same at receiver end to get the original signal. Different fiber optic cables namely SIPMMA fiber, thermocouple type K with glass fiber/stainless cables, OFNR cable is used to obtain intensity modulation using digital input signal. It has been investigated that the output of detector is affected with the change in cable and the size of cables also plays an important role in data transmission. The study of switched faults in intensity modulation is also taken up in the study.
机译：光纤是传输大量数据的最快，最可靠的方法。光纤链路用于局域网到世界范围的数据通信。光纤通信是一种通过通过光纤发送光脉冲将信息从一个地方传输到另一个地方的方法。数字光通信探索了这种结合的实际应用，并将数字调制技术应用于光通信系统。强度调制是一种调制技术，其中光源的光输出功率根据调制信号的某些特性而变化。光纤训练器ST 2502是一种单板光纤发射器接收器模块，提供两个独立的光纤通信链路，用于当前工作。它用于研究和分析与光纤损耗有关的模拟和数字信号调制。这项工作旨在获得通过光缆传输的数字信号的强度调制，并在接收器端对其进行解调以获得原始信号。不同的光纤电缆，即SIPMMA光纤，带玻璃纤维/不锈钢电缆的K型热电偶，OFNR电缆用于使用数字输入信号获得强度调制。研究表明，检测器的输出受电缆变化的影响，电缆的尺寸在数据传输中也起着重要的作用。研究中还进行了强度调制中的开关故障的研究。

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