25:75 488nm 2x2 Polarization-Maintaining Fiber Coupler

The RGB-PMFBC-W0488 RGB series polarization-maintaining fiber coupler is a high-performance coupler designed for visible light wavelength splitting, manufactured using our IPCS-5000-P polarization-maintaining fiber fusion tapering machine. It offers excellent performance and can cover the entire wavelength range (460-2200nm). The polarization-maintaining coupler is made with panda-type Fujikura polarization-maintaining fiber, enabling it to maintain a high polarization extinction ratio (PER) when light is emitted along the slow axis of the fiber. Xiaoxiao Photonics' optical polarization-maintaining components are aligned to the slow axis by default, and our polarization-maintaining couplers feature a high extinction ratio and can operate over a wide temperature range from -40°C to 85°C.

Product features：Fused fiber coupler for 460-2200nm、 Coupling ratios of 50:50, 75:25, 90:10, or 99:1、 Bidirectional coupling (any end can be used as input)、 2.0 mm narrow key FC/PC or FC/APC connectors、 Each broadband coupler comes with its own test report

Application area：Polarization-maintaining fiber amplifiers、 Fiber optic gyroscopes、 Optical sensors

Unit Price

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Part Number

RGB-PMFBC-W0488-S2-CR2575-1-9-PA-M

Lead Time

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Stock

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General Parameters

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Dimensional Drawing

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Definition of Slow Axis

Parameters

Structure		Unit	1×2/2×2
Type			Polarization-Maintaining Fiber optic Coupler(PMFBC)
Operating Wavelength		nm	488 /632/633
Operating Bandwidth		nm	±15
Maximum Insertion Loss	50/50	%	4 .0 /4 .0
	30/70	%	5 .75/2 . 10
	10/90	%	1 1 .60/1 .00
	5 /95	%	14 .80/0 .80
	2 /98	%	18 .50/0 .45
	1 /99	%	22 .00/0 .40
Extinction Ratio		dB	CR>5%		≥18 .00
			5 % ≥CR>1%		≥15 .00
Return Loss		dB	≥50 .00
Directivity		dB	≥55 .00
Operating Temperature		Deg .	-5~+75
Storage Temperature		Deg .	-40~+85
Fiber Length		m	1 .00 ±0 . 10
Fiber Type			Panda PM Fiber
Fiber Diameter		um	250	900		900/2000/3000

Package Dimensions		mm	3×54	3×70		90×16×10

Notes:

All test results exclude connectors; adding connectors increases insertion loss by 0.3 dB.

Better parameters or other requirements can be customized.

Single-Point Data Test: 1x2, 50:50, 488nm Polarization-Maintaining Fiber Coupler
(Tested with an FP laser, center wavelength 488nm, spectral width: 30nm, 2.5 mW polarization-maintaining laser as an example)

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