Polarization Maintaining (PM) Couplers

Gould's truly fused polarization maintaining (PM) fiber optic couplers/splitters offer high extinction ratio with polarization launch into a single or dual axis (Slow axis & Fast axis) .Gould utilizes our proven Fused Biconical Taper (FBT) process to manufacture polarization maintaining couplers.

Key Strengths

Low Loss
Low back-reflection
Small size
High extinction ratio with polarization launch into a single or dual axis (Slow & Fast)
Made in U.S.A. on Gould's Proven high reliability Fused Biconical Taper (FBT) Process

Optical Specification for Single Wavelength (UV to IR) PM Splitters
	Dual Axis (D)		Single Axis (S)
Parameter	Series 1	Series 2	Series 1	Series 2
Axis	Slow & Fast		Slow¹
Min. Extinction Ratio (dB)	20	18	20	18
Typ. Extinction Ratio (dB)	25	20	25	20
Typ.Excess Loss.(dB)	≤0.3	≤0.5	≤0.3	≤0.5
Wavelength (nm)	²UV to IR
***Operating.Temperature (°C)	0 to +70	0 to +70	0 to +70	0 to +70
Storage Temperature (°C)	-40 to +85
Thermal Stability (dB)	≤0.3
Directivity (dB)	40 (1X2), 60 (2X2)
Fiber	PANDA (Various suppliers)
Package Size	2.9mm Dia.X 40mm
⁴Coupling Ratio (CR)	³Insertion Loss (IL) (dB)
50%	3.5	3.7	3.5	3.7
10%	11/0.8	11.3/1.0	11/0.8	11.3/1.0
5%	14.2/0.5	14.5/0.7	14.2/0.5	14.5/0.7
1%	23.3/0.3	23.7/0.7	23.3/0.3	23.7/0.7
*** -10°C to +70°C available upon request ¹ Fast Axis available upon request ² Upon availability of PM fiber ³ IL tested at 25°C at Slow Axis ⁴ CR tested at Slow Axis

Fused wavelength flattened PM splitter specifications
	Dual Axis (D)		Single Axis (S)
Parameter	Series 1	Series 2	Series 1	Series 2
Axis	Slow & Fast		Slow^†
Min. Extinction Ratio (dB)	20	18	20	18
Typ. Extinction Ratio (dB)	25	20	25	20
Typ.Excess Loss.(dB)	≤0.3	≤0.5	≤0.3	≤0.5
Wavelength (nm)	1310, 1480, 1550 etc
Bandpass(nm)	±20nm
***Operating.Temperature (°C)	0 to +70	0 to +70	0 to +70	0 to +70
Storage Temperature (°C)	-40 to +85
Thermal Stability (dB)	≤0.3
Directivity (dB)	40 (1X2), 60 (2X2)
Fiber	PANDA (Various suppliers)
Package Size	2.9mm Dia. X 40mm
^**Coupling Ratio (CR)	^*Insertion Loss (IL) (dB)
50%	3.8	4.0	3.8	4.0
10%	11.7/1.0	12.0/1.2	11.7/1.0	12.0/1.2
5%	15.0/0.6	15.7/0.8	15.0/0.6	15.7/0.8
1%	23.5/0.5	23.7/0.7	23.5/0.5	23.7/0.7
* IL tested at 25°C at Slow Axis including WDL. CR tested over the wavelength band, at Slow Axis. ^* -10°C to +70°C available upon request ^† Fast Axis available upon request.

Fibers & Operating Wavelengths
Fiber Code	Description	Operating Wavelengths
83	NUFERN PM1550-HP	1490 - 1620nm
84	CORNING PM98-U25A-H	980nm
86	CORNING PR PM13-U25A-H	1290nm and above
87	NUFERN PM14XXC-HP	1390 - 1625
89	NUFERN PM780C-A	780-980nm
90	NUFERN PM980C-HP	970-1550nm