Plastic Plastic Fiber Couplers (Splitters)
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Description
Fiber couplers, or splitters, are special fiber optic devices with one or more input
fibers for distributing optical signals into two or more output fibers. The optical
light is passively split into multiple output signals (fibers), each containing light
with properties identical to the original except for reduced amplitude. Because
the splitter is a passive device it is immune to EMI, consumes no electrical
power and does not add noise to system design. The splitter’s passive design is
bi-directional and operationally independent of wavelength, constrained only by
the physical properties of the PMMA fiber core.
Fiber couplers have input and output configurations defined as M×N. M is the
number of input ports and is one or greater. N is the number of output ports and
is always equal to or greater than M. When there are multiple inputs, output
signals are always a combination of the input signals – a coupler can also be
considered a combiner.
Applications
➤ Feedback Control Circuits
Fiber optic couplers or splitters are available in a wide range of styles and sizes
to split or combine light with minimal loss. All couplers are manufactured using
a very simple proprietary process that produces reliable, low-cost devices. They
are physically rugged and insensitive to operating temperatures. Couplers can be
fabricated in custom fiber lengths and/or with terminations of any type.
➤ Ethernet and
Automotive LANs
➤ Medical Instruments
➤ Automotive Electronics
➤ Optical Sensors
Features
➤ Wavelength Multiplexing
◆ Light, Compact Design
➤ Audio Systems
◆ Standard Jacketed 1000 µm Core Plastic Fiber Cable
➤ Electronic Games
◆ High Isolation
◆ Light-Tight Stainless Steel Housing
◆ Low Loss
◆ Excellent Temperature Stability
◆ RoHS Compliant
Maximum Ratings
(TA =25°C)
Operating Temperature Range
(TOP)........................-40° to 85°C
Storage Temperature Range
(TSTG).......................-55°to 85°C
Fiber Bending Radius.............25 mm
Fiber Tensile Strength.................5 kg
Fiber Characteristics (TA =25°C)
Material: Fiber couplers are manufactured with Mitsubishi GH4001
1000 µm core jacketed step-index optical fiber. See website for detailed
fiber specifications.
Parameter
Symbol
Typ.
Max.
Unit
Fiber Attenuation (650 nm light)
–
Min.
Fiber N/A
–
–
–
–
Core Refractive Index
–
–
.51
–
–
Cladding Refractive Index
–
–
–
–
I ndustrial F iber O ptics , I nc . • www.i-fiberoptics.com
–
.14
1.492
1.402
.16
dB/m
Plastic Plastic Fiber Couplers (Splitters)
C HA R A C T E R I S T I C S
STOCK NUMBER
SPLITTING
RATIO %
IF-540
PORTS
2 ×2
IF-541
2 ×2
80:20
IF-542
2 ×2
90:10
IF-562
1 ×2
50:50
IF-543
1 ×3
33:33:33
IF-544
4 ×4
25:25:25:25
50:50
INSERTION
LOSS (MAX)
Port A
Port A
Port B
Port B
Port A
Port A
Port B
Port B
Port A
Port A
Port B
Port B
Port A
Port A
Port A
Port A
Port A
- Port C 5.6 dB
- Port D 3.7 db
- Port C 3.7 dB
- Port D 5.6 db
- Port C 9.9 dB
- Port D 2.9 db
- Port C 2.9 dB
- Port D 9.9 db
- Port C 1.5 dB
- Port D 2.5 db
- Port C 2.4 dB
- Port D 1.5 db
- Port C 5.6 dB
- Port D 3.7 db
- Port B 8.2 dB
- Port C 8.2 db
- Port D 8.2 dB
—
—
EXCESS LOSS
(MAX)
Port A 1.6 dB
Port B 1.6 dB
Port A 1.7 dB
Port B 1.7 dB
Port A 2.0 dB
Port B 2.0 dB
Port A 1.6 dB
Port A 2.2 dB
—
—
All devices are available with ST®, SMA or Versalink fiber terminations.
FIGURE 1. Reference measurement - (pre-fused)
FIGURE 2. Excess & insertion loss measurement - (post-fused)
FIGURE 3. Overall Dimensions for 2 × 2 Coupler
I ndustrial F iber O ptics , I nc . • www.i-fiberoptics.com
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