High Power Optical Circulator (S+C+L Band)

The high power optical circulator (S+C+L band) is a nonreciprocal, passive fiber optic component that is on the basis of the non-reciprocal property of Faraday effect. Its key functionality is directing light sequentially from port to port with low loss in only one direction which results in the separation of signals which travel along an optical fiber in opposite directions. The routing characteristics of the 3-port circulator can be represented by 1 → 2, 2 → 3. This high power optical circulator is functional over the S+C+L band, typically 1540±80 nm. It’s a good choice for many industrial applications including bi-directional transmission network, fiber amplifier systems, optical time domain reflectometers (OTDR), and other advanced optical communication systems. Related Products ↓

More about the high power optical circulator ...

The wavelength ranges over which optical circulators are specified may vary by several nm, and Lfiber can also provide high power optical circulator which cover the complete S+C+L band (1540±80 nm).

High Power Optical Circulator – Principle of Operation

The high power fiber optic circulator is essentially all mini bulk assemblies packed with fiber pigtails. It’s based on the use, precise positioning and alignment of miniaturized traditional optical components such as polarizing beam splitter, reflector prism, Faraday rotator, bi-refringent blocks, and retardation plate, etc.

The operation of high power fiber optic circulator is based on two main principles: polarization splitting and recombining together with nonreciprocal polarization rotation, and asymmetric field conversion with nonreciprocal phase shift.

There are many ways to construct the high power fiber optic circulator, and all of them involve the non-reciprocal property of Faraday effect. The Faraday effect is a magneto-optic effect, in which the polarization of light is rotated in an optical medium with a magnetic field applied along the light propagation direction.

High Power Optical Circulator (S+C+L Band Fiber Optic Circulator)

To meet the demand for fiber optic circulator used in high-power fiber laser technology and advanced optical communication systems, Lfiber has increased the power tolerance of the high power optical circulator.

High Power Optical Circulator (S+C+L Band)

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FEATURES OF HIGH POWER OPTICAL CIRCULATOR

High Isolation & High Return Loss
Low Insertion Loss & PDL
Optical Path Epoxy Free

APPLICATIONS OF HIGH POWER OPTICAL CIRCULATOR

EDFA, DWDM, and OTOR
DWDM and OADM networks
Bi-directional Transmission System

Specifications of High Power Optical Circulator
Operating Wavelength (nm)		S+C+L Band (1540±80)
Isolation (over all λ, T, SOP) (dB)		≥30
Insertion Loss (λc, 23 ℃, all SOP) (dB)		≤1.0
Insertion Loss (λc, 0~70 ℃, all SOP) (dB)		≤1.3
PDL (dB)		≤0.20
WDL (dB)		≤0.50
Return Loss (dB)		≥50
PMD (ps)		≤0.1
Directivity (dB)		≥50
Power Handling (W)		1, 2, 3, 5; Others on request
Fiber Type		SMF-28e
Operating Temperature ( ℃ )		0 ~ +70
Storage Temperature ( ℃ )		-40 ~ +85
Package Dimensions (mm)	For Φ 250μm bare fiber or Φ 900μm loose tube	Φ 5.5 × L50
Package Dimensions (mm)	For Φ 3mm or Φ 2mm cable	L90 × W20 × H9.5

Notes:

The high power optical circulator is customizable and the above specifications are subject to change without notice.
For device with connectors, IL is 0.3dB higher, RL is 5.0dB lower.
Bare fiber should not support the weight of the connector. So that if any connectors needed, for the pigtail type it’s better to choose the 900μm loose tube jacket instead of the 250μm bare fiber.
For CW high-power optical interconnection, we recommend fusion splice without connectors.
For product customization or special requirements, please contact Lfiber’s sales department for availability.

Package Dimensions & Routing Characteristics

High Power Fiber Optical Circulator S+C+L Band

Routing: Port 1 → Port 2, Port 2 → Port 3

Ordering Information for High Power Optical Circulator
Center Wavelength	Port Type	Power	Package Dimensions	Pigtail Type	Fiber Length	Connector
1540nm (1460-1620nm)	3-Port	1W	90×20×9.5 mm	Φ250 μ m bare fiber	0.5m	None
		2W	Φ5.5×50 mm	Φ900 μ m loose tube	0.8m	FC/UPC
		3W		Φ2mm cable	1.0m	FC/APC
		5W		Φ3mm cable	1.5m	SC/APC
		Custom …			2.0m	SC/UPC
					Custom …	MU
						LC/PC
						LC/APC
						E2000 APC
						E2000 PC
						ST/PC