980/1550 nm Polarization Maintaining Fused WDM

The Polarization Maintaining Fused Wavelength Division Multiplexer combine or separate light at different wavelengths. They offer very low insertion loss, high extinction ratio, and excellent environmental stability. These components can be operated on both fast and slow axis.

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Product Detail

Key Features	Applications
High Extinction Ratio	Fiber Laser
Low Insertion Loss	Fiber Amplifier
Excellent Environmental Stability

Specifications

Parameter	Unit	Value
Longer Operating Wavelength	nm	1550 ± 20
Max. Insertion Loss¹	dB	0.7
Min. Isolation¹	dB	17
Min. Extinction Ratio²	dB	20
Shorter Operating Wavelength	nm	980 ± 10
Max. Insertion Loss¹	dB	0.7
Min. Isolation¹	dB	17
Thermal Stability	dB/℃	≤ 0.005
Min. Return Loss³	dB	55
Min. Directivity	dB	55
Max. Optical Power (Continuous Wave)	mW	300
Fiber Type⁴	-	PM Panda Fiber
Operating Temperature	℃	- 5 to + 70
Storage Temperature	℃	- 40 to + 85

¹Test at central wavelength only. IL is 0.5 dB higher for each connector added.
²ER is 2 dB lower for each connector added. Connector key is aligned to slow axis.
³RL is 5 dB lower for connector added.
⁴For PM 980 fiber option, the components may be more sensitive since the bending loss of PM 980 fiber is larger at 1550 nm.

WDM/Filter

980/1550 nm Polarization Maintaining Fused WDM

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