1xN (NxN) Monolithic Single Mode Coupler

1×3, 3×3, 1×4 monolithic couplers have the compact package size, low insertion loss, and high reliability

performance. These couplers were designed for optical modules, the fiber sensors and fiber testing instruments.

Features Applications
  • Small Dimension
  • Low Insertion Loss
  • Low PDL
  • Optical Communication System
  • Optical Sensor
  • Instrument Testing

Performance Specifications

Parameter Unit 1×3 SSC 3×3 SSC 1×3 WBC 3×3 WBC 1×3 DWC
Operating wavelength nm 1310 or 1550 1310 or 1550 1310 or 1550
Operating bandwidth nm ±15 ±40 ±40
Grade – P A P A P A P A P A
Insertion loss dB ≤5.4 ≤5.7 ≤5.6 ≤5.8 ≤5.6 ≤6.0 ≤5.8 ≤6.2 ≤5.8 ≤6.2
Typical excess loss dB 0.1 0.15 0.1 0.15 0.1 0.15 0.1 0.15 0.1 0.15
PDL dB ≤0.2 ≤0.25 ≤0.25 ≤0.3 ≤0.2 ≤0.25 ≤0.25 ≤0.3 ≤0.25 ≤0.3
Uniformity dB ≤0.8 ≤1.2 ≤1.0 ≤1.4 ≤1.0 ≤1.4 ≤1.3 ≤1.6 ≤1.2 ≤1.5
Directivity dB ≥55
Maximum Power Handling W 2
Operating temperature °C -40~+85
Parameter Unit 1×4 SSC 1×4 WBC
Normal Size Mini Size Normal Size Mini Size
Operating wavelength nm 1310 or 1550, others on request
Operating bandwidth nm ±15 ±40
Grade – P A P A P A P A
Insertion loss dB ≤7.0 ≤7.4 ≤7.2 ≤7.5 ≤7.1 ≤7.4 ≤7.2 ≤7.5
Typical excess loss dB 0.15 0.25 0.15 0.25 0.2 0.3 0.2 0.3
PDL dB ≤0.20 ≤0.25 ≤0.25 ≤0.35 ≤0.20 ≤0.25 ≤0.25 ≤0.35
Uniformity dB ≤1.0 ≤1.4 ≤1.2 ≤1.5 ≤1.2 ≤1.6 ≤1.4 ≤1.8
Directivity dB ≥55
Maximum Power Handling W 2
Operating temperature °C -40 ~ +85
Parameter Unit 1×4 DWC 1×4 TWC
Normal Size Mini Size Normal Size Mini Size
Operating wavelength nm 1310 and 1550 1310,1490 and 1550
Operating bandwidth nm ±40 1310±40,1490±10 and 1550±40
Grade – P A P A P A P A
Insertion loss dB ≤7.2 ≤7.5 ≤7.3 ≤7.7 ≤7.2 ≤7.5 ≤7.3 ≤7.7
Typical excess loss dB 0.3 0.4 0.3 0.4 0.3 0.4 0.3 0.4
PDL dB ≤0.25 ≤0.30 ≤0.25 ≤0.35 ≤0.25 ≤0.30 ≤0.25 ≤0.35
Uniformity dB ≤1.4 ≤1.8 ≤1.5 ≤2.0 ≤1.4 ≤1.8 ≤1.5 ≤2.0
Directivity dB ≥55
Maximum Power Handling W 2
Operating temperature °C -40 ~ +85
  1. Above specification are for device without connector, and may change without notice. All parameters are tested at room temperature.
  2. Other specifications can be made on customer request.
  3. For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower.
  4. If there is pulse application, please be sure to inform us of pulse energy and peak power.

Packaging Information

Configuration 1×3 or 3×3 1×4
Dimensions

(Ф×L)(mm)

 250μm bare fiber Normal size Ф3.0×54
Mini size Ф3.0×40
900μm loose tube Ф4.0×60 Ф4.0×65
Fiber lead length 1 meter, others on request
  1. Other package dimensions can be made on customer request.

Order information  P/N: FBTC-①-②-③-④-⑤-⑥-⑦-⑧-⑨-⑩

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 ⑩
Type Grade Wavelength Coupling Ratio Port Fiber Type Pigtails

Diameter

 Fiber Length Connector Package
SSC

WBC

DWC

TWC

 P: P Grade

A:A Grade

 13:1310nm

14:1490nm

15:1550nm

35:1310&1550nm

345:1310&1490&1550nm

 AV: even

XX: others

 103:1×3

303:3×3

104:1×4

 S28:SMF-28

X:Others

 25:250μm

90:900μm

 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

ST: ST/PC

LP: LC/PC

LA: LC/APC

XX: Others

 3.0X54

3.0×40

4.0×60

4.0X65

Part Number Example #1: FBTC-SSC-P-15-AV-103-S28-90-10-FA-3.0×54

Description: 1×3 Monolithic Single Mode Coupler, SSC type, P grade, even coupling ratio, SMF-28e fiber, with 0.9mm OD loose tube, 1.0m length fiber pigtails, FC/PC connectors at all ports.3.0X54 package.

Part Number Example #2: FBTC-WBC-P-15-AV-104-S28-90-10-FA-3.0×54

Description: 1×4 Monolithic Single Mode Coupler, WBC type, P grade, even coupling ratio, SMF-28e fiber, with 0.9mm OD loose tube, 1.0m length fiber pigtails, FC/PC connectors at all ports.3.0X54 package.

Ordering Information for Custom Parts

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

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