Fibermart Optical Circulator
Optical Circulator 3 Ports C+L (1520~1620nm) Polarization Insensitive
Optical Circulator is widely used in advanced communication systems and fiber-optical sensor systems. All Fiber-Mart's products are qualification tested. Fiber-Mart’s 3-port Optical Circulator allows light to travel in only one direction. A signal entering to Port 1 will exit Port 2 with minimal loss, while a signal entering Port 2 will exit Port 3 with minimal loss. Light entering port 2 experiences a large amount of loss at port 1, and light entering port 3 experiences a large amount of loss at ports 2 and 1. Optical circulators are non-reciprocal devices. This means that any changes in the properties of the light caused by passing through the device are not reversed by traveling in the opposite direction.
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
Application Diagram
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. |
Specifications:
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) |
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: Fiber-Mart can customize any other wavelengths according to your requirement.
2. Length: The default length for the cable is 1M, Fiber-Mart 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 +86 1 86 2786-1199 if you have any requirement for it.
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