488nm Polarization Beam Combiner/Splitter| DK- PHOTONICS

The 488nm Polarization Beam Combiner/Splitter can be used either as a polarization beam combiner to combine light beams from two PM input fibers into a single output fiber, or as a polarization beam splitter to split light from an input fiber into two output fibers of orthogonal polarization states.

DK Photonics offers a large selection of PBS/C. These devices can handle powers rang from 100mW to 100W or other on request, and have center operating wavelengths ranging from 500 nm to 2050nm.

If you do not see a standard Polarization Beam Combiner/Splitter that meets your needs, we welcome the opportunity to review your desired specification and quote a custom Polarization Beam Combiner/Splitter. Requests for custom fiber pigtails, different wavelengths and handling power of operation or other specific needs will be readily addressed.

PBS principle

Performance Specifications

Parameter		Unit	Value
Grade		-	P
Operating wavelength		nm	488
Operating bandwidth		nm	±10
Typical insertion loss		dB	1.0
Max. insertion loss		dB	1.5
Min. Extinction Ratio(for PBS only)		dB	20
Return loss		dB	>50
Directivity		dB	>50
Max. Power Handling		mW	50
Tensile Load		N	< 5
Fiber Type	Port 3	-	SM 460-HP, or PM460-HP
	Port 1 &Port 2	-	PM460-HP
Operating temperature		℃	-5 ~ +70
Storing temperature		℃	-40 ~ +85
Package dimension		mm	14x12x8

Above specifications are for device without connector. All parameters are tested at room temperature.
For devices with connectors, IL will be 1.5dB higher, RL will be 5dB lower and ER will be 2dB lower. The default connector key is aligned to slow axis.
Since the light is bidirectionally reversible, PBC can also be used as PBS.

Package Dimension

488nm Polarization Beam Combiner/Splitter

Order information

P/N: PBC/PBS-①-②-③-④-⑤-⑥-⑦

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

Grade

Operating Wavelength

Power Handling (Total)

Fiber type (Port 1)

Pigtails Diameter

Fiber Length

Connector

P:P

488:488nm

XX: Others

L: <50mW

1:SM fiber

2:PM fiber, slow axis 45° to port 1

3:PM fiber, slow axis aligned to port 1

25:250μm

90:900μm

XX: Others

08:0.8m

10:1.0m

XX: Others

00: None

FP: FC/PC

FA: FC/APC

XX: Others

Part Number Example:PBS-P-488-L-3-90-10-00

Description:488nm Polarization Beam Splitter, <50mW power, P grade, Port 3 PM fiber, slow axis aligned to port 1, with 0.9mm OD loose tube, 1.0m fiber length, and no connectors at all ports.

Ordering Information for Custom Parts:

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

PBS principle

More Details Regarding Routing path:

Polarization Beam Combiner:

Routing path is from port 1, 2 to 3, Here are three options of polarized state from Port 1, 2 to Port 3

Option 1:PM to SM fiber

Port 1: 50%, Linear polarized light in, through slow axis,

Port 2: 50%, Linear polarized light in, through slow axis

Port 3, 100%, Circularly polarized light Out,

Option 2:PM to PM, port 1 is slow axis 45° aligned to port 3

Port 1, 2, only work through slow axis, blocked the fast,

Port 1 or 2, 100%, Linear polarized light in, through slow axis,

Port 3, 25% linear polarized light out, through slow axis, and 25% by the fast,

Option 3: PM to PM fiber, port 1 is slow axis 0° aligned to port 3

Port 1, 2, only work through slow axis, blocked the fast,

The slow axis of port 1 is aligned to the slow axis of port 3,

The slow axis of port 2 is aligned to the fast axis of port 3,

Polarization Beam Splitter:

Routing path is from port 3 to 1,2, Here are three options of polarized state from Port 3 to Port 1 & 2

Option 1: SM to PM fiber

Port 3, Circularly polarized light in,

Port 1: 50%, Linear polarized light out, through slow axis,

Port 2: 50%, Linear polarized light out, through slow axis

Option 2: PM to PM, port 3 is slow axis 45° aligned to port 1

1. Port 3, Linearly polarized light in, through slow axis,

Port 1: 50%, Linear polarized light out, through slow axis, Port 2: 50%, Linear polarized light out, through slow axis

2. Port 3, Linearly polarized light in, through fast axis,

Port 1: 50%, Linear polarized light out, through slow axis, Port 2: 50%, Linear polarized light out, through slow axis

Option 3: PM to PM, port 3 is slow axis 0° aligned to port 1

1. Port 3, Linearly polarized light in, through slow axis,

Port 1: 100%, Linear polarized light out, through slow axis, Port 2: 0%

2. Port 3, Linearly polarized light in, through fast axis,

Port 1: 0%, Port 2: 100%, Linear polarized light out, through slow axis

Product

PBC/PBS

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