光纤

Fiber Optic 650x350

We make markets in Attenuators, Fiber Optic Channel Banks, Fiber Optics Multiplexers, Fiber Storage Trays, Optical Cross Connects, Add/Drop, Regenerators and Multiplexors.

变送器

The most commonly used optical transmitters are semiconductor devices such as light-emitting diodes (LEDs) and laser diodes. The difference between LEDs and laser diodes is that LEDs produce incoherent light, while laser diodes produce coherent light. For use in optical communications, semiconductor optical transmitters must be designed to be compact, efficient, and reliable, while operating in an optimal wavelength range, and directly modulated at high frequencies.

激光二极管通常直接调制,即光输出是通过直接施加到器件的电流控制。

接收器

光接收机的主要部件是一个光检测器,它使用光电效应将光转换成电能。

Optical-electrical converters are typically coupled with a transimpedance amplifier and a limiting amplifier to produce a digital signal in the electrical domain from the incoming optical signal, which may be attenuated and distorted while passing through the channel. Further signal processing such as clock recovery from data (CDR) performed by a phase-locked loop may also be applied before the data is passed on.

光缆类型

An optical fiber consists of a core, cladding, and a buffer (a protective outer coating), in which the cladding guides the light along the core by using the method of total internal reflection. The core and the cladding (which has a lower-refractive-index) are usually made of high-quality silica glass, although they can both be made of plastic as well.

光纤在光纤通信中使用的两​​种主要类型,包括多模光纤和单模光纤。

放大器

光纤通信系统的传输距离在传统上一直由光纤的衰减和由纤维失真的限制。

一种替代的方法是使用一个光放大器,它直接放大光信号,而无需将信号转换到电域。