Dual Window Wavelength Flattened Coupler

The Singlemode Dual Window Wavelength Flattened Couplers offer very low insertion loss, low polarization dependence and excellent enviromental stability. Accurate coupling ratio from 50/50 to 1/99 are available with very good uniformity in a wide wavelength range of both 1310nm and 1550nm windows.

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Product Detail

Parameter	Unit	Value
Center Wavelength (λc)	nm	1310 & 1550 or Specify
Operating Wavelength	nm	λc ± 40
Coupling Ratio	%	01/99	02/98		03/97		05/95		10/90
Max. Insertion Loss	dB	22/0.9	19/0.25		17.5/0.3		14.5/0.4		11/0.75
Coupling Ratio	%	20/80		30/70		40/60		50/50
Max. Insertion Loss	dB	7.8/1.3		5.9/1.9		4.6/2.7		3.5/3.5
Max. PDL (Tap/Through Port)	dB	0.15
Thermal Stability	dB/℃	≤ 0.002 over -5 ℃ to +70 ℃
Min. Return Loss	dB	50
Directivity	dB
1 × 2	dB	55
2 × 2	dB	60
Max. Optical Power (Continuous Wave)	mW	300
Fiber Type	-	SMF-28 Fiber
Operating Temperature	℃	-5 to +70
Storage Temperature	℃	-40 to +85