• 1. Introduction Optical fiber sensing takes advantage of the physical properties of light as it passes through the optical fiber to detect changes in temperature, strain and other parameters. Optical fiber has wide working frequency band and large dynamic range, which is suitable for remote measurement and remote control. It is an excellent low loss transmission line. Under certain conditions, optical fiber is particularly easy to accept the measured or field loading, and is an excellent sensing element. The optical fiber is electrically neutral, small in size, light in weight, flexible, anti electromagnetic interference, and good in radiation resistance. It is especially suitable for use in flammable, explosive, space restricted, strong electromagnetic interference and othe...
    2022 - 09 - 29
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Data Transmission | Description-Types-Differences

Date: 2022-08-30
Views : 10

It is universally acknowledged that optical transceiver is widely used in the data center. That is because optical transceiver is playing a major role on data transmission. Therefore this article is written for make a brief introduction about data transmission.

 

Data Transmission | Description-Types-Differences


Description

the Data transmission, also referred to as digital transmission or digital communications, is the movement of data over a communication medium from one device to another. In the form of a digital bitstream or a digitized analog signal, the process of data transmission is applied in different channels: point to point, point-to-multipoint, or multipoint-to-multipoint. Examples of such channels are copper wires, optical fibers, wireless communication using radio spectrum, storage media and computer buses. The data is represented as an electromagnetic signal, such as an electrical voltage, radiowave  ,microwave , or infrared signal.

Analog transmission is a method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that of a variable. According to the most common definition of digital signal, both baseband and passband signals representing bit-streams are considered as digital transmission, while an alternative definition only considers the baseband signal as digital, and passband transmission of digital data as a form of digital-to-analog conversion. 

 

Types

The figure below illustrates the types of data transmission.

Data Transmission | Description-Types-Differences


Differences

The tables below illustrates the differences of data transmission.

Table 1

Comparison between Parallel Transmission and Serial Transmission

Basis for Comparison

Parallel Transmission

Serial Transmission

Definition

Data flows in multiple directions, 8 bits(or 1 byte) a time

Data flows in 2 directions, bit by bit

Cost

expensive

economical

Number of bits transferred per clock pulse

8 bits or 1 byte

1 bit

Speed

fast

slow

Applications

short-distance communication

long-distance communication

Example

computer to printer

computer to computer

 

 

Table 2

Comparison between Asynchronous Transmission and Synchronous Transmission

Basis of Comparison

Asynchronous Transmission

Synchronous Transmission

Definition

transmits 1 byte or character at a time

transmits data in the form of chunks or frames

Speed

slow

fast

Cost

cost-effective

expensive

Time interval

random

constant

Are there gaps between the data?

No

Yes

Examples

email, forums, letters

chat rooms, telephonic conversations, video conferencing

 


Our BEIHAI provides different kinds of optical transceivers to satisfy the increasing requirement of data transmission. Take the service and quality first, we are committed to becoming a professional and reliable optical solutions provider and optical products supplier.

 

 

References:

https://teachcomputerscience.com/data-transmission/

https://en.wikipedia.org/wiki/Data_communication


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