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Why is optical fiber is small?
The light will be considered energy and that energy bounces side to side through the fiber. There is a constant loss. So the smaller the fiber the less loss you would have.
What are the factor that contribute to the optical fiber loss?
Due to No of connectors, No of splicing, Quality of Fiber / connectors, Not using Attenuator according to the distance, by using dirty attenuators, etc.
What is meant by atenuation in fiber optics?
Attenuation in fiber means 'loss of optical power' suffered by the optical signal in fiber itself.
Is cross talk is possible in optical fiber?
One of the advantages of optical fiber is that it is NOT susceptible to cross-talk.
Is optical fiber unidirectional?
The optical fiber can be used both as unidirectional and bidirectional. The main application of optical fiber is in long-distance links, so there exists no need to employ them as unidirectional. For each direction different wavelengths are used to modulat the signals. At the same time many bidirectional signals can travel through the same optical fiber.
What is the Difference between lap joint and splice joint?
splicing is of optical fiber cable where as jointing is of cther cables
What is the db loss in optical fiber?
If there is a 3db loss that means 50 percent of the light were lost.
Why is optical fiber is small?
The light will be considered energy and that energy bounces side to side through the fiber. There is a constant loss. So the smaller the fiber the less loss you would have.
In optical fiber propagation loss is increases or decreases with increase in length of the fiber cable?
Increases with length and connections.
What is meant by attenuation in optical fiber?
When an optical signal of a given wavelength travels in the fiber it looses power. The amount of loss of power per Km length of fiber is called its attenuation. A=10*LOG10(POUT/PIN) dB/Km Where POuT is optical power after 1 Km PIN is th epower launched in the Fiber.
What is meant by attenuation in Optical Fiber Communication?
When an optical signal of a given wavelength travels in the fiber it looses power. The amount of loss of power per Km length of fiber is called its attenuation. A=10*LOG10(POUT/PIN) dB/Km Where POuT is optical power after 1 Km PIN is th epower launched in the Fiber.
What are the factor that contribute to the optical fiber loss?
Due to No of connectors, No of splicing, Quality of Fiber / connectors, Not using Attenuator according to the distance, by using dirty attenuators, etc.
What is meant by atenuation in fiber optics?
Attenuation in fiber means 'loss of optical power' suffered by the optical signal in fiber itself.
What about Cable Monitoring System?
GLSUN optical cable monitoring system, combined with OTDR, optical switch, and upper-level network management software, form a systematic and intelligent system integrating functions of testing, analysis, alarm, positioning, information management, and worksheet. It features high integration density, strong commonality, abundant product form, and flexible upgrading and expansion. Fiber In-Service Monitoring Light sources of different wavelengths will not interfere with each other in the transmission process in optical fiber. Based on this principle, we combine the service light [wavelength 1550] and test light [wavelength 1650] for transmission, so that the quality of optical fiber can be monitored without interruption of service. Spare Fiber Monitoring Spare fiber monitoring is to inject the monitoring signal into the spare fiber and indirectly observe the loss of other fiber in the cable by monitoring the loss of the spare fiber. Since the monitoring signal goes through the spare optical fiber, passive device such as filter is not required, which can effectively reduce the installation process and cost of the system. Fiber Out-of-Service Monitoring Optical fiber out-of-service monitoring refers to monitoring the original communication optical fiber in the condition that communication equipment is interrupted. Therefore, passive devices such as filter are not required, which can effectively reduce the installation process and system cost of the system. The disadvantage is that communication equipment needs to be interrupted. Application: Optical switch + OTDR Monitoring Scheme Optical power monitoring scheme can monitor the total loss of optical fiber, but it can not reflect the loss performance of optical fiber, nor can it find the fault of optical fiber. While OTDR can monitor the loss performance of the fiber. It can find the failure type and accurately by analyzing the OTDR curve. Since OTDR costs are relatively high, optical switch is needed to switch to different optical fibers, so as to reduce the cost of the whole system. By controlling the 1xN optical switch, the control unit starts the OTDR to test the optical fiber loss performance in turn. By analyzing the test curve of OTDR, the purpose of optical fiber monitoring is achieved. Application: Optical Power Detector + Optical Switch + OTDR Monitoring Scheme This scheme can effectively solve the problem of poor timeliness for fault report of optical switch + OTDR scheme. The optical power detector monitors the total loss of the optical fiber in real-time. If any abnormality is found, the control unit is informed to start and switch to the abnormal optical fiber and conduct OTDR fiber performance test. The alarm type and will be identified by analyzing OTDR curve. The control unit can also control the OTDR and optical switch for periodic tests and roll call tests. However, this scheme still has the problem of poor timeliness caused by OTDR polling in case of abnormality of multiple monitored fibers. Application: PON + Optical Switch + OTDR Monitoring Scheme With the development of FTTX, PON network monitoring and maintenance has been mentioned on the agenda by telecom operators or special network users. Glsun developed high sampling accurate OTDR module for PON monitoring. Reference from www dot glsunmall dot com
What is the optical range of optical fiber?
40 GHz
How does an optical transmitter sends signals to the optical fiber?
Usually, there is a laser diode that is optically coupled to the fiber.
Is cross talk is possible in optical fiber?
One of the advantages of optical fiber is that it is NOT susceptible to cross-talk.
