4-port fiber optic circulator: efficient isolation, worry-free data transmission!
The 4-port optical fiber circulator plays a significant role in optical communication and optical network fields. Its main functions and applications can be summarized as follows:
Main Functions
Non-reciprocal Transmission: The four-port optical fiber circulator achieves non-reciprocal transmission of optical paths, spatially separating the backward-propagating optical signals from the forward-propagating ones and outputting them from another port. This feature is crucial for bidirectional transmission and communication of optical signals.
Port Transmission Characteristics: Optical signals propagate in a specific order among the four ports, typically from the first port to the second, then from the second to the third, while another optical signal propagates from the third to the fourth port. This transmission mode ensures the unidirectionality and orderliness of optical signals.
Application Areas
Communication Systems:
Fiber CATV Systems: Enables efficient transmission of television signals.
Metropolitan Area Networks (MANs) / Access Networks: Supports high-speed, large-capacity data transmission in broadband access and MAN construction.
Bidirectional Communication Systems: Ensures efficient bidirectional transmission of optical signals in applications such as telephone communication and video calls.
Advanced Optical Networks:
Dense Wavelength Division Multiplexing (DWDM) Systems: Used in conjunction with fiber gratings and other reflective components to enhance transmission capacity and efficiency.
Optical Add-Drop Multiplexers (OADMs): Enables flexible optical signal adding and dropping in optical networks, improving network flexibility and scalability.
Optical Amplifiers: In optical amplifiers, the four-port optical fiber circulator is used for the introduction and output of pump light, ensuring the unidirectionality and stability of optical signals during amplification.
Optical Time Domain Reflectometry (OTDR): In fiber testing and maintenance, the circulator directs test signals into the fiber and receives reflected signals, facilitating measurements of fiber attenuation, breaks, and other characteristics.
Fiber Sensing Applications: In fiber sensing systems, the circulator can be used to construct sensing loops for measuring and monitoring various physical quantities.
5G Base Stations: In radio access networks, the four-port optical fiber circulator is a core component used primarily for isolating output and input signals at base station antennas. With the widespread adoption of 5G Massive MIMO technology, the demand for optical fiber circulators is expected to increase significantly.
Performance Advantages
High Isolation: Ensures that optical signals do not interfere with each other during transmission.
Low Insertion Loss: Reduces energy loss of optical signals during transmission.
High Extinction Ratio: Improves the signal-to-noise ratio of optical signals, ensuring clarity and accuracy of transmission.
Excellent Environmental Stability: Enables stable operation in various harsh environments, ensuring the reliability and stability of communication systems.
In summary, the four-port optical fiber circulator has broad application prospects and significant value in optical communication and optical network fields. With the continuous development of communication technologies and growing application demands, the performance and applications of four-port optical fiber circulators are expected to continue improving and expanding.
Shenzhen optics forest Co.,Ltd specialist manufacturer of SM or PM 4-port optical fiber circulator :
1310nm， 1550nm ,1585nm 4-port optical fiber circulator:
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Specifications |
||
|
Parameter |
Unit |
Value |
|
Grade |
|
P |
|
Operating wavelength |
nm |
1310, 1550, 1585 |
|
Transmitting Direction |
|
1→2,2→3,3→4 |
|
Bandwidth |
nm |
±30 |
|
Peak Isolation |
dB |
60 |
|
Min. Isolation at 23℃ |
dB |
40 |
|
Typ. Insertion Loss at 23℃ |
dB |
0.7 |
|
Max. Insertion Loss at 23℃ |
dB |
0.9 |
|
Max. PDL |
dB |
0.20 |
|
Min. Return loss |
dB |
50 |
|
Max. PMD |
dB |
0.1 |
|
Min. Directivity |
dB |
50 |
|
Min. Cross Talk |
dB |
50 |
|
Power handling(CW) |
mW |
300 |
|
Fiber Type |
|
SMF-28e |
|
Operating Temperature |
℃ |
0 ~ +60 |
|
Storage Temperature |
℃ |
-40~+85 |
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