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Fused coupler for laser

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1310nm Single-Mode Fused Coupler

DK Photonics' 1310nm single-mode fused coupler are used to split off a portion of light to allow for optical monitoring and feedback. These devices are used extensively in fiber amplifier power control, and in transmission equipment for performance monitoring and feedback control. Our ultra-low polarization dependent loss couplers offer low levels of sensitivity to polarization, enable more effective monitoring and management of optical networks.

Features

  • Low Insertion Loss
  • Low Polarization Dependent Loss
  • All Split Ratios Available
  • High stability & Reliability

Applications

  • Fiber Laser
  • Fiber amplifier
  • Testing Instrumentations

Performance Specifications

Parameter
Unit
Values
Grade
-
P
A
Operating wavelength
nm
1310,1480,1550,1610, others on request
Operating bandwidth
nm
± 15
Typical excess loss
dB
0.07
0.10
Insertion loss @ Coupling Ratio (%)
50/50
dB
≤3.4
≤3.6
45/55
dB
≤4.1/3.1
≤4.3/3.3
40/60
dB
≤4.4/2.6
≤4.7/2.8
35/65
dB
≤5.2/2.3
≤5.5/2.5
33/67
dB
≤5.4/2.2
≤5.7/2.3
30/70
dB
≤5.7/1.9
≤6.0/2.0
25/75
dB
≤6.6/1.7
≤7.0/1.8
20/80
dB
≤7.6/1.25
≤8.0/1.35
15/85
dB
≤9.2/1.0
≤9.6/1.2
10/90
dB
9.20~11.00/≤0.65
9.00~11.20/≤0.8
5/95
dB
12.00~14.20/≤0.4
11.75~14.45/≤0.5
3/97
dB
14.05~16.55/≤0.30
13.75~16.85/≤0.4
2/98
dB
15.70~18.50/≤0.25
15.35~18.85/≤0.35
1/99
dB
18.55~21.50/≤0.20
18.15~22.00/≤0.3
PDL
dB
≤0.10
≤0.15
Return Loss
dB
≥50
Directivity
dB
≥55
Max. Optical Power (CW)
W
0.5,2,5,10
Fiber Type
-
SMF-28e or other
Operating Temperature
-20~+75
Storage Temperature
-40~+85
Package Dimension
mm
Ф3x54(bare fiber), Ф3x60(0.9mm loose tube)
  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.

Package Dimension

1310nm Single-Mode Fused Coupler

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.
Grade Port Wavelength Power Handling Coupling Ratio(%) Fiber Type
Pigtails
Diameter
Fiber Length Connector
P: P Grade
A:A Grade
102:1x2
202:2x2
13:1310nm
14:1480nm
15:1550nm
16:1610nm
XX: Others

L:<0.5W

2:2W

5:5W

10:10W

20:20W

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
S28: SMF-28e
X: Others
25:250μm
90:900μm
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
LP: LC/PC
LA: LC/APC
XX: Others
Part Number Example: FBTC -P-102-13-L-50-S28-90-10-FA

Description: 1X2 Single Mode Standard Coupler, 1310nm, P grade,1x2, 0.5w handling power,50:50, SMF-28e fiber, with 0.9mm OD loose tube,1.0m length fiber pigtails, 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.

DK