1940/1570nm Polarization Maintaining WDM/Tap Coupler Hybrid Combination

DK Photonics’ WDM/Tap Coupler Hybrid Combination is a combination of a wavelength division multiplexer, a tap coupler in a compact package. All input and output fibers are polarization maintaining. This product has an extremely low insertion loss, a very stable tap-coupling ratio, high isolation, and high return loss. This product offers integrated solution to amplifier application by combining more functions into a very compact package.

Performance Specifications

Parameter		Unit	Values
Signal Central Wavelength (λ c)		nm	1940
Signal Wavelength Range		nm	±40
Max. Signal Excess Loss, λ c, @ 23℃		nm	1.8
Tap Ratio		%	1~50
Tap Channel Typ. Loss		dB	1% (19.5~22), 5% (13.5 ~ 16.0)
Min. Isolation (WDM)	Signal Channel	dB	25
Min. Isolation (WDM)	Pump Channel	dB	12
Pump Wavelength Range		nm	1520~1590
Max. Insertion Loss (Pump to Common)		dB	1.0
Min. Extinction Ratio @ 23℃		dB	Type B: 20, Type F: 22
Min. Return Loss		dB	50
Max. Power Handling (CW)		W	0.5, 2, 3, 10
Max. Peak Power for ns Pulse if any		kW	1, 5,10
Max. Tensile Load		N	5
Fiber Type	Pump port	–	PM1550 fiber or specified
Fiber Type	Common Signal and tap port	–	PM1950 fiber or specified
Operating Temperature		℃	-5 to +70
Storage Temperature		℃	-40 to +85
Package Dimensions		mm	Ø5.5 x L38(<5W), 60x12x8(>5W)

Above specifications are for device without connector.
For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower. The default connector key is aligned to slow axis. Power transmits through the connector less than 2W.
Type B: Both axis working, Type F: Fast axis blocked, the default is Type B if without request.
If there is pulse application, please be sure to inform us of pulse energy and peak power.
For forward pumping, Tap is both axis working, for backward pumping, signal output and Tap are both fast axis blocked, slow axis working. If you have questions about the axial direction, please contact us.

Package Dimension

PS: For forward pump, Tap is both axis working. For backward pump, Tap is fast axis blocked, slow axis working. Both types pump is both axis working.

Order information

P/N:PMWTH-①-②-③-④-⑤-⑥-⑦-⑧

When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better. If need any connector, we do not recommend choosing a 250μm bare fiber pigtail.

①

②

③

④

⑤

⑥

⑦

⑧

Wavelength

Optical Power

Tap Ratio

Pump Configuration

Axis alignment

For signal

Pigtail Diameter

Fiber Length

Connector

9457:1940 signal/1570 pump

XX: Others

L:<0.5W

1:1W

3:3W

5:5W

10:10W

01:1% Tap

02:2% Tap

05:5% Tap

F:Forward Pump

B:Backward Pump

F:Fast axis blocked, Slow axis working

B:Both of axis working

25:250μm bare fiber

90:900μm Loose Fiber

XX: Others

05:0.5m

10:1.0m

15:1.5m

XX: Others

00:None

FP: FC/PC

FA: FC/APC

SP: SC/PC

SA: SC/APC

XX: Others

Part Number Example: PMWTH-9457-L-01-B-F-90-10-FA

Description: Polarization Maintaining WDM/Tap Coupler Hybrid Combination, 1940nm signal/1570nm pump, 1% tap, backward pump, fast axis blocked, slow axis working, with 0.9mm OD loose tube, 1.0m fiber length, and FC/APC connectors at all ports.

Ordering Information for Custom Parts

If you need to customize other specifications, please provide detailed description for your requirement.

Product

PM Hybrid Components

Products