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4 Ports C+L 1520~1620nm Polarization Insensitive Optical Circulator

4 Ports C+L 1520~1620nm Polarization Insensitive Optical Circulator

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Part Number: FT-PICIR-4-CL-X

Polarization Insensitive Optical Circulator 4 Ports C+L 1520~1620nm

F-tone’s Four-port Optical Circulator is a special type of circulator that has one input (port 1), one output (port 4) and two common ports (port 2&3). The light goes through port 1 to port 2. At port 2, any incoming light is guided to port 3 as output, while all input from port 3 is guided to port 4 as output.
Compared to three-port circulator, four-port device has one additional bi-directional port. Hence, it can be used to construct more flexible or more complex optical fiber sub-systems, such as add/drop module, mux/demux module, multi-port bi-directional splitters, WDM optical router, etc.

Characteristics

  • Low Back Reflection
  • High Extinction Ratio
  • Low Insertion Loss
  • High Return Loss

Applications

  • DWDM system
  • Add-Drop Multiplexing
  • Fiber Amplifier
  • Fiber Sensor
  • Chromatic Dispersion Compensation Devices
  • Fiber Bragg Grating
  • Polarization maintaining optical system

Application Diagram

Below are Three Port Circulator application for your reference.

As the picture shows: The input DWDM channels are coupled into Port 1 of the device with a FBG device connected to Port 2. The single wavelength reflected from the FBG then reenters the Circulator in Port 2 and is routed accordingly to Port 3. The remaining signals pass through the FBG and exit on the top fiber.
Circulator used to drop an optical channel from a DWDM system using a Fiber Bragg Grating.
As the picture shows: A Circulator is located at both ends of the fiber. Each Circulator functions to add a signal in one direction while removing the signal in the other. See the example to the left.
Circulator can be used to send optical signals through a single fiber in two directions.

Dimension


Sample Picture


Order Information

wavelength Type Grade Pigtail Type Length Connector
1310nm
1480nm
1550nm
1585nm
1520~1620nm		 3 Ports
4 Ports		 P Grade 250um bare fiber
900um loose tube
3mm loose tube
2mm loose tube		 0.5m
0.8m
1.0m
1.5m
2.0m
Custom		 None
FC UPC/APC
SC UPC/APC
LC UPC/APC
ST UPC/APC
E2000 UPC/APC
MU

Note:
1. Wavelength: F-tone can customize any other wavelengths according to your requirement.
2. Length: The default length for the cable is 1M, F-tone could also provide 0.5M,0.8M,1.5M, 2.0M ,etc.
3. Connector: Each port of the Circulator could be with any connector such as FC/LC/SC/ST,etc. Please contact us by email to [email protected] or call at +1-205-282-9089 if you have any requirement for it.

Type
Parameter		 3 Port 4 Port
Operating wavelength (nm) 1310, 1480,1550,1585,(+/-30) C+L(1520~1620) 1310,1480,1550,1585,(+/-30) C+L (1520~1620)
Isolation (λc,23℃ all sop) (dB) ≥40 ≥40 ≥40 ≥40
Isolation (Over all λ, T, sop) (dB) ≥35 ≥30 ≥35 ≥30
Insertion Loss (λc,0~70℃ all sop) (dB) Grade P ≤0.8 ≤1.1 ≤0.8 ≤1.2
Grade A ≤1.0 ≤1.2 ≤1.0 ≤1.3
PDL (dB) ≤0.15 ≤0.20
Return loss (dB) ≥50
PMD (ps) ≤0.1
Directivity ≥50
Power handling (mW) ≤300
Fiber Type SMF-28e
Operating temperature (℃) 0 ~ +70
Storage temperature (℃) -40 ~ +85
Package Dimensions (mm) For bare fiber of 900um loose tube φ5.5×L50(P2) φ5.5×L68(P5) φ5.5×L64(P8)
For 3mm cable L98XW14.5XH8.5(P6) L90XW20XH9.5(P9) L80xW12xH10(P7)



This product belongs to F-tone Networks' optical components product line. For detailed specifications, please contact our sales team. Thank you!
Important Notice:
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.
The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.

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Power and Wavelength Testing

Test the signal delivering strength and wavelength, to ensure the signal decoding capacity of the receiver, and the wavelength remains consistent from the transmitter to the receiver.

Power and Wavelength Testing

Traffic Testing

Test the bit error rate and packet loss rate, to make them meet the corresponding standards and ensure the performance of transceivers.

Traffic Testing

Optical Performance Testing

Test the transceivers' eye diagram situation, receiving sensitivity, extinction ratio, wavelength, light-emitting, light-receiving, current and voltage, to ensure the signal quality, stability and reliability of the transmission.

Optical Performance Testing

End Face Testing

Check the end face of the transceivers and keep them clean for more stable data transmission, better performance, and durability.

End Face Testing

Various Switch Tests

Every module is quality tested for compatibility in the multi-brand switches environment, guaranteeing flawless operations.

Various Switch Tests

About F-tone Networks

F-tone Networks is now a world leader in development of optical transceivers and provide a wide range of high-speed optical solutions for optical communication networking, especially for AI, Data Center, enterprise data networking, Industry, aerospace, mining, shipbuilding, railway, metro, long haul transport networking, and mobile access networking applications
F-tone Networks invested in foundational photonics technologies and extensive product development and engineering with global presence in many area also.

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