What is the principle of optical communication?

Release time:

2023-06-13 17:55

Source:

Long Bearing Communication

The principle of optical fiber communication is: at the sending end, the transmitted information (such as voice) must first be converted into an electrical signal, and then modulated onto the laser beam emitted by the laser, so that the intensity of the light changes with the amplitude (frequency) of the electrical signal. And send it out through the optical fiber; at the receiving end, the detector converts the optical signal into an electrical signal after receiving it, and restores the original information after demodulation.

Optical fiber communication is the main transmission means of modern communication network. Its development history is only 10 or 20 years, and it has gone through three generations: short-wavelength multimode fiber, long-wavelength multimode fiber and long-wavelength single-mode fiber.

The adoption of optical fiber communication is a major change in the history of communication. More than 20 countries, including the United States, Japan, Britain, and France, have announced that they will no longer build cable communication lines, but are committed to the development of optical fiber communication. China's optical fiber communication has entered the practical stage.

Extended information:

The key parts of the optical communication network are equipped with optical transmission devices. This device serves many purposes.

1. Signal conversion (sending signal): convert electrical signal into optical signal.

2. Signal multiplexing: multiple narrow signals are aggregated into one wide signal.

3. Signal relay: long-distance transmission, relay signal in the middle.

4. Signal steering: change the transmission direction of the signal.

5. Signal demultiplexing: Decompose the multiplexed signal into the original individual signal.

6. Signal conversion (receiving signal): convert optical signal into electrical signal.

Optical communication equipment, including optical fiber, G.657 optical fiber for FTTx, G.656 optical fiber for broadband long-distance high-speed and large-capacity optical fiber transmission, photonic crystal optical fiber, rare earth-doped optical fiber (including ytterbium-doped optical fiber, erbium-doped optical fiber, thulium-doped optical fiber, etc.), Laser energy transmission optical fiber, and new optical fiber with some special properties, including plastic optical fiber, polymer optical fiber, etc.

Optical fiber access equipment, passive optical network (PON), optical line terminal (OLT), optical network unit (ONU), wavelength division multiplexer, etc.

What is the optical module for

Who knows the basic equipment composition and function of optical communication?

Related news

Data Center Solutions II

The modular data center is mainly composed of cabinets, enclosed channels, power supply and distribution systems, refrigeration systems, intelligent monitoring systems, comprehensive wiring systems, and fire protection systems.

IDC Data Center Solutions

With the development of the communication industry, the construction of modular data centers has become a common trend. With years of experience, Changcheng provides innovative modular data center optical series products, including optical distribution frames, modules, pre terminated jumpers, and other products, which have high density and scalability, and are suitable for the smooth upgrading of future large data centers of 40G/100G/400G.

FTTX Harsh Environment Wiring Solutions

FTTx special outdoor environment, refers toa number of special environmental fiber opticommunication cablingtion, military, ship orenvironment, such as stage broadcasting, tlevision and film video, live sports events, aviacoal mine oil wells communication connecton, military rapid co-mmunication cabling, temporary emergencys kind of fiber optic communication wiring, gererally require wiringcommunication repair special scenarios. Thcommunication fiber optic wire, need to hae waterproof, sunscreen tensile, compressivewear-resistantcorrosion-resistant, wire soft and easy to ptt away and so on. CCOFC fordifferent use of the environment, the introdiction of a series of corresponding wiring prodicts, such as fibernd outdoor generalon-metallic armored fiber optic cable, indoor aoptic cable TPU armored fiber optic cable, nfield optical cable, etc, Connectors havemetal aviation connector series, TBE field wall conlector series, 3k93Coptoelectronic hybrid insertion and extractin self-locking series, HXB with lens beam exponsion series and aseries of professional high-end connectors。

CCOFC | Changcheng Technology FTTH Fiber to Home Solution

With the rapid development of China's network, FTTH fiber to the home is an inevitable trend, and only fiber can achieve a bandwidth of over 100Mbps to the home. Therefore, FTTH has become an inevitable choice and development direction. In recent years, with the continuous development of fiber to home FTTH technology, CCOFC has completed thousands of FTTH renovation and new FTTH projects, becoming a high-quality product provider and technical support provider for communication operators.

What is the optical module for

Optical modules are optoelectronic devices that perform photoelectric and electro-optical conversion. The optical module is also called a fiber optic transceiver, which is mainly used for photoelectric conversion of signals. At the transmitting end, the electrical signal of the device is converted into an optical signal, and at the receiving end, the optical signal is restored to an electrical signal. The optical module is composed of a laser at the transmitting end, a detector at the receiving end, and electronic devices for data encoding/decoding.

What is the principle of optical communication?