Project Description

1550nm Polarization Maintaining Tap Coupler (1×2/2×2) (Fast axis blocking)

The 1550nm Polarization Maintaining Tap Coupler is a polarization maintaining coupler which splits the light from the input PM fiber into two output PM fibers. The state of polarization can be aligned either with the slow axis or the fast axis of the PM fibers. The rugged stainless-steel package is designed for high optical performance and stability. This compact device offers low excess insertion loss, low back reflection, and high extinction ratio. Split ratios from 1 to 50% are available.

This PM tap coupler is made of separate light crystals, the output port of light is different from the PM Filter Coupler. And its coupling ratio is more accurate, can handle higher power than PM filter coupler.

The PM Tap Coupler can be used to split high power linearly polarized light into multiple paths without perturbing the line are state of polarization (SOP).It can also be used as a power tap to monitor signal power in a PM fiber system without disturbing the linear SOP of light propagating in the PM fiber. Applications include PM fiber interferometers, power sharing in polarization sensitive systems, and signal monitoring in PM fiber systems.

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

Features Applications
·       Low Insertion Loss

·       High Extinction Ratio

·       Compact In-Line Package

·       High Stability and Reliability

 ·       Fiber Optic Instruments

·       Fiber Sensors

·       Coherent Detecting

·       Research

Performance Specifications

Parameter Unit Values
Configuration – 1×2 2×2
Center Wavelength nm 1550
Operating Wavelength Range nm ±40
Tap Coupling Ratio % 1±0.2%, 2±0.4%, 4±0.8%, 5±1.0%, 10%, 20% and 50%
Max. Insertion Loss dB IL related to CR
Max. Excess Lose dB 0.7 1.1
Uniformity (Only for 50/50) dB 0.6 0.8
Mini. Extinction Ratio Type F (Fast axis blocked) dB 22 20
Return Loss dB ≤50
Max. Power Handling W 0.5, 1, 2,5,10, 20
Max. Tensile Load N 5
Fiber Type – SMF-28 or PM1550 Panda fiber for tap port

PM1550 Panda fiber for input & output ports
Operating Temperature ℃ -5 to +70
Storage Temperature ℃ -40 to +85
Package Dimensions mm Ø5.5 x L35
  1. above specifications are for device without connector. All parameters are tested at room temperature.
  2. If tap port coupling ratio is ≤ 5%, ER will be 2dB lower; for ≤1% tap port, ER is out of concern.
  3. 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.
  4. For >10W high power applications, we will use heat sink package, contact DK Photonics for details.
  5. If there is pulse application, please be sure to inform us of pulse energy and peak power.

Package Dimensions 

Order information P/N: PMTC-①-②-③-④-⑤-⑥-⑦-⑧-⑨

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 ⑨
Port Operating Wavelength Power Handling Axis Alignment Coupling Ratio Fiber Type for Tap Port Pigtails Diameter Fiber Length Connector
102:1×2

202:2×2

 30:1030nm

64:1064nm

13:1310nm

15:1550nm

XX: Others

 L:<0.5W

1:1W

2:2W

 F: Fast axis blocked 50:50/50

40:40/60

30:30/70

20:20/80

10:10/90

05:5/95

02:2/98

01:1/99

XX: Others

 0:SM Fiber

1: PM Panda fiber

X: Others

 25:250μm bare fiber

90:900μm Loose Tube

XX: Others

 08:0.8m

10:1.0m

XX: Others

 00: None

FP: FC/PC

FA: FC/APC

SA: SC/APC

LP: LC/PC

LA: LC/APC

XX: Others

Part Number Example: PMTC-202-15-L-F-50-1-90-10-FA

Description: 1550nm Polarization Maintaining Tap Coupler 2×2 – 0.5W, Fast axis blocking, 50:50 coupling ratio, 1.0m PM Panda Fiber with 0.9mm OD loose tube, 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.

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