PM Isolator, Polarization-Maintaining Fiber Optical Isolator

The 1064nm PM isolator (polarization maintaining fiber optic isolator, up to 2W) is a non-reciprocal fiber optic device which permits the flow of optical power in only one direction preventing reflections in the backward direction. By using PM panda fibers, the 1064nm PM optical isolator maintains a well-defined state of polarization (SOP) of the light. Both PM and non-PM versions of these 1064nm optical Isolators are available. Related Products ↓

More about the 1064nm polarization-maintaining fiber optic isolator ...

Applications of the 1064nm polarization maintaining (PM) isolator include protection of a transmitting laser diode from back reflections. Such reflections increase the noise in the system by disrupting the diode’s operation. The 1064nm PM isolator also improves the stability of fiber amplifiers by minimizing the possibility of feedback, which causes unwanted oscillations in such devices.

Basics of 1064nm PM Isolator (Polarization Maintaining Fiber Optic Isolators)

The 1064nm PM isolator is based on the nonreciprocal Faraday effect: a longitudinal magnetic field creates a circular birefringence that rotates the orientation of the in coming polarization.

Generally, the 1064nm PM isolator is placed at the output of the optical source in order to avoid reflections of light from returning back to the source avoiding in this way instabilities. Furthermore, 1064nm PM isolators are used by the Doped Fiber Amplifiers with the aim of avoiding an oscillating behavior.

Fiber-Coupled 1064nm PM Isolator (Polarization Maintaining Optical Fiber Isolators)

A fiber-coupled 1064nm PM isolator is a device that acts like an optical diode: it transmits well in one direction while blocking light in the other direction. Such isolators are also available in fiber-coupled form, i.e., with input and output coupled to single-mode fibers.

1064nm PM Isolator (up to 2W)

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FEATURES OF 1064NM PM ISOLATOR

Polarization Maintaining
Low Insertion Loss
High Isolation and Return Loss
High Reliability and Stability

APPLICATIONS OF 1064NM PM ISOLATOR

PM Fiber Amplifier
Fiber Laser
Testing Instruments
Mopa Fiber Laser

Specifications of 1064nm PM Isolator (Polarization Maintaining Isolator)
Center Wavelength (nm)	1064
Operating Wavelength Range (nm)	±5
Typ. Peak Isolation at 23 ℃ (dB)	35
Min. Isolation at 23 ℃ (dB)	28
Max. Insertion Loss at 23 ℃ (dB)	1.7
Max. Insertion Loss at 23 ℃ and Input Power 300 mW (dB)	2
Max. Insertion Loss at 23 ℃ and Input Power 1 W (dB)	2.5
Max. Insertion Loss at 23 ℃ and Input Power 2 W (dB)	3
Min. Extinction Ratio at 23 ℃ (dB)	22
Min. Return Loss (Input /Output) (dB)	45
Max. Average Optical Power (W)	2
Max. Peak Power for ns Pulse (kW)	10
Max. Tensile Load (N)	5
Operating Temperature (°C)	+10 to +50
Storage Temperature (°C)	0 to +60

Notes:

The polarization maintaining isolator (1064nm PM isolator) 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, ER is 2.0dB lower.
Unless otherwise specified, the slow axis of the fiber is aligned with the key of the PM fiber connector.
Slow axis working and fast axis blocked as standard, while operating on both the slow and fast axis available on request
Bare fiber should not support the weight of the connector. So that if you need any connectors, it’s better to choose the 900μm loose tube jacket instead of the 250μm bare fiber.
For product customization, please contact our sales department for availability.

Package Dimensions

1064 nm PM Isolator (Polarization Maintaining Fiber Optic Isolators)

Ordering Information for 1064nm PM Isolator (Polarization Maintaining Isolator)
Wavelength	Axis Alignment	Fiber Type	Package Dimension	Pigtail Type	Fiber Length	Connector	Average Power	Peak Power
1064nm	Slow axis working and fast axis blocked	PM1550	33x17x11.5mm	250μm bare fiber	0.5 Meter	None	1W	10kW
	Fast axis working and slow axis blocked	PM1310	Specified	900μm loose tube	0.8 Meter	FC/UPC	2W	20kW
	Both axis working	PM980			1.0 Meter	FC/APC
					Specified	SC/UPC
						SC/APC
						LC/UPC
						LC/APC
						Others

About Axis Alignment of the 1064nm PM Polarization Maintaining (PM) Fiber Optical Isolator

“Slow axis working and fast axis blocked” means that light on just the slow axis is transmitted and the fast axis light is blocked in the forward direction; Both the slow and fast axis light are blocked in the backward direction.
“Both axis working” means that both the slow and fast axis light are transmitted in the forward direction, both the slow and fast axis light are blocked in the backward direction.