3 port Optical Circulator
Polarization Insensitive Optical Circulator It’s a compact, highperformance components, with high isolation, low insertion loss, low PDL, high stability and reliability. It is widely used in combination with fiber gratings and other reflective components in DWDM systems, wavelength add/drop, high speed systems, bi-direction communication systems, dispersion compensation, EDFA application and optical time domain reflectometer (OTDR) measurements.
Description
| Features | Applications |
| Low Insertion Loss | Optical Amplifier |
| Wide Band High Isolation | Metro Area Network |
| Low PDL | Wavelength Add/Drop |
| High Stability and Reliability | Dispersion Compensation |
| Compact In-Line Package | Bi-Direcation Communication |
| Epoxy-free on Optical Path |
Performance Specifications
| Parameter | ||||
| Configuration | Port 1 to Port 2 to Port 3 | |||
| Operating Wavelength (nm) | 1310, 1480,1550 | C+L (1525~1610) | S+C+L
(1460~1620) |
|
| Isolation (λc,23℃ all sop) (dB) | ≥40 | ≥40 | ≥40 | |
| Isolation (Over all λ, T, sop) (dB) | ≥35 | ≥30 | ≥30 | |
| Insertion Loss (λc,23℃ all sop) (dB) | ≤0.8 | ≤0.8 | ≤1.2 | |
| Polarization dependent Ioss (dB) | ≤0.15 | |||
| Return Loss (dB) | ≥50 | |||
| PMD (ps) | ≤0.1 | |||
| Directivity （dB） | ≥50 | |||
| Power (mW) | ≤300 | |||
| Fiber Type | SMF-28e | |||
| Operating Wavelength (℃) | 0 ~ +70 | |||
| Storage Wavelength (℃) | -40 ~ +85 | |||
| Package (mm) | bare fiber or 900um loose tube | φ5.5×L50 | ||
| 2.0mm or 3.0mm cable | 90x20x10 | |||
Ordering Information
| Configuration | Wavelength | Package | Fiber Type | Fiber Length | Connector |
| 3=3Port
4=4Port |
1310=1310 1480=1480 1550=1550 C+L=1525~1610 S+C+L=1460~1620 X=Customized |
S1=Stainless stee tube A0=90x20x10 X=Customized |
00=bare fiber 09=900um tube 20=2.0mm Cable 30=3.0mm Cable |
05=0.5m 10=1.0m 15=1.5m X=Customized |
00=none LP=LC/UPC LA=LC/APC SP=SC/UPC SA=SC/APC FP=FC/UPC FA=FC/APC X=Customized |
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.
