3 port 1310 or 1550nm Optical Circulator
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- Description: GEZHI Photonics 3port Optical Circulator is widely used in advanced communication systems and fiber-optical sensor systems.
3 port Polarization Insensitive 1310nm or 1550nm Optical Circulator
GEZHI Photonics’ Three-port 1x2 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.
♦ Low Insertion Loss
♦ Wide Band High Isolation
♦ Low PDL
♦ Compact In-Line Package
♦ High Stability and Reliability
♦ Epoxy-free on Optical Path
♦ Optical Amplifier
♦ Metro Area Network
♦ Wavelength Add/Drop
♦ Dispersion Compensation
♦ Bi-Direcation Communication
Port 1 to Port 2 to Port 3
Operation Wavelength (nm)
1310±30 or 1550±30 or 1585±30
Typical Isolation (dB)
Minimum Isolation (dB)
Cross Talk (dB)
Polarization Dependent Loss (dB)
Polarization Mode Dispersion
Power Handling (mW)
Opterating Temperature (℃)
Package dimension (mm)
Φ5.5xL50 or Φ5.5xL63
Specifications may change without notice.
Above specification are for device without connector.
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.