Multimode Fiber Couplers

Features		Applications
Low Insertion loss Wide Operating Wavelength Compact Size Excellent Environmental & Mechanical Stability		Local Area Networks CATV Systems Subscriber Loop Fiberoptic Instruments Fiber Sensors

Performance Specifications

Type	Multimode Standard Fiber Couplers
Coupling Ratio (%)	50/50
Grade	A	B
Excess Loss (Typical) (dB)	0.5 (0.8)*	0.7 (1.0)*
Max. Insertion Loss (dB)	3.5 (4.0)*	3.7 (4.2)*
Uniformity (Max.) (dB)	0.6	0.8
Directivity (Min.) (dB)	35
Central Wavelength (nm)	850 or 1310 or 1550
Operating Temperature( ° C)	-20 ~ +70(-40 ~ +85 available upon request)
Fiber Type	Corning multimode 50/125, 62.5/125, 100/140 fiber
Fiber Pigtail Length (m)	1m or custom length
Port Configuration	1x2 or 2x2
Dimensions (mm)	Package M, A, B, C

Type	Multimode 1X3, 1X4 True Fusion Couplers
Port Configuration	1x3	1x4
Grade	P	P
Max. Insertion Loss (dB)	6.0 (6.5)*	7.2 (7.6)*
Uniformity (Max.) (dB)	1.2	1.2
Directivity (Min.) (dB)	35
Central Wavelength (nm)	850 or 1310 or 1550
Operating Temperature(° C)	-20 ~ +70(-40 ~ +85 available upon request)
Fiber Type	Corning multimode 50/125, 62.5/125, 100/140 fiber
Fiber Pigtail Length (m)	1m or custom length
Dimensions (mm)	Package A, B, C

Type	Multimode Tree/Star Couplers
Configuration Type	n x 4 (n=1,2,4,)	n x 8 (n =1,2,8)	n x 16 (n =1,2,16)
Max. Insertion Loss (dB)	7.0/7.6*	10.5/11.0*	14.0/15.0*
Uniformity (Max.) (dB)	1.5	2.0	2.5
Directivity (Min.) (dB)	40dB
Central Wavelength (nm)	850 or 1310
Operating Temperature(° C)	-20 ~ +70(-40 ~ +85 available upon request)
Fiber Type	Corning multimode 50/125, 62.5/125 fiber, 100/140 fiber
Fiber Pigtail Length (m)	1m or custom length
Dimensions (mm)	Package S, D	Package D	Package E

*For 50/125 um, 62.5/125 um fiber operating is at 850nm.

**Measured under the stable mode condition with LED light source (CPR < 12).

Note: All values referenced are without connector

P
A
B

85=850nm
13=1310nm
15=1550nm

50=50/50
30=30/70
10=10/90
05=5/95
01=1/99
AV=Tree Coupler

0102=1x2
0202=2x2
0103=1x3
0303=3x3
0104=1x4
• •
• •
0116=1x16
1616=16x16
3232=32x32

A=Package A
B=Package B
C=Package C
D=Package D
E=Package E
M=Package M
S=Package S

1=Bare Fiber
2=900µm Jacket
3=3mm Cable

2=50/125um
3=62.5/125um
4=100/140um 5=Special fiber

0=None
1=FC/APC
2=FC/PC
3=SC/APC
4=SC/PC
5=ST
6=LC
X=Special

* Type:
M -- Multimode fiber coupler

Package Dimensions:
Package M: 3mm x 40mm stainless steel tube
Package A: 3mm x 54mm stainless steel tube
Package B: 3mm x 60mm stainless steel tube
Package C: 8.5mm x 14mm x 98mm case
Package S: 9.2mm x 50.88mm x 88.9mm case
Package D: 11.6mm x 80mm x 120mm
Package E: 14.5mm x 102mm x 142mm
Pigtail Style:
Package M, A:	250um bare fiber
Package A, B:	250um bare fiber or 900um loose tube
Package C ~ E:	3mm cable or 900um loose tube
Package S:	250um bare fiber or 900um loose tube