1950nm In-line Faraday Rotator

The In-line Faraday Rotator is characterized with low IL, high return loss, high extinction ratio and excellent environmental stability and reliability. It is with fiber in and fiber out. They are ideal for polarization maintaining fiber amplifiers, fiber lasers, and high-speed communication system and instrumentation applications.

Performance Specifications

Parameter			Unit	Values
Center Wavelength			nm	1950
Operating Bandwidth			nm	±30
Faraday Rotation Angle (Single Pass)			degree	45 or 90
Rotation Angle Tolerance over Wavelength and Temperature			degree	±2.0
Max. Insertion Loss		45 deg.	dB	0.8
		90 deg.	dB	1.0
Min. Extinction Ratio			dB	20
Min. Return Loss			dB	≥50/50
Max. Optical Power			mW	300
Fiber Type	Option 1: PM→PM		–	PM1550/PM1950→PM1550/PM1950
	Option 2: SM→PM		–	SMF-28e/SM1950→PM1550/PM1950
	Option 3: SM→SM		–	SMF-28e/SM1950→SMF-28e/SM1950
Operation Temperature			°C	-5 ~ +70
Storage Temperature			°C	-40 ~ +85
Dimensions			mm	Ø5.5xL35

Above specifications are for device without connector.
For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower. The default connector key is aligned to slow axis. Power transmits through the connector less than 2W.
Higher power up to 20W is possible; please contact DK Photonics for details.
Default fiber is SMF-28e/PM1550 for 2um.
For Option 1: PM→PM, The default is: the axial direction of the stress zone of the input PM fiber is consistent with the output PM fiber.

In-line Faraday Rotator

Package Dimension

*Due to ongoing design improvements, the package size is subject to change. Please contact DK Photonics for confirmation.

Order information

P/N: ILFR-①-②-③-④-⑤-⑥

When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better. If need any connector, we do not recommend choosing a 250μm bare fiber pigtail.

①

②

③

④

⑤

⑥

Wavelength

Angle

Fiber Type

Pigtails Diameter

Fiber Length

Connector

1950:1950nm

XX: Others

45:45°

90:90°

1: Option 1

2: Option 2

3: Option 3

25:250μm bare fiber

90:900μm Loose Fiber

XX: Others

05:0.5m

10:1.0m

15:1.5m

XX: Others

00: None

FP: FC/PC

FA: FC/APC

XX: Others

Part Number Example: ILFR-1950-45-1-90-10-FA

Description: 1950nm in line Faraday Rotator, faraday rotation angle: 45°, PM1950 fiber in and PM1950 fiber out, with 0.9mm OD loose tube, 1.0m length fiber pigtails, FC/APC connectors at all ports.

Ordering Information for Custom Parts

If you need to customize other specifications, please provide detailed description for your requirement.

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