Email: sales@newport.com Web: www.newport.com
FIBER OPTIC COMPONENTS
OPTICAL FIBERS
ACCESSORIES AND TOOLS
EDUCATIONAL KITS TUTORIAL
5-9
The F-CPL-V variable ratio coupler
utilizes two polished fiber halves,
placed in optical contact, to allow
evanescent wave coupling between
the two fibers cores. The coupling
ratio can be continuously varied by
adjusting a micrometer which changes
the separation of the two fiber cores.
The F-CPL-VP polarization main-
taining (PM) version preserves the
orientation of the fast and slow axes
throughout the tuning range, while
maintaining low crosstalk between
the polarization states.
Both coupler versions are offered at
either 1310 and 1550 nm. Other
wavelengths are available — please
call Newport. Specifications
Key Features
• Very precise coupling ratio
adjustment — from 0 to 99%
• Low insertion loss
• High polarization isolation
• PM and non-PM types
available
Variable Ratio Couplers
Model Model Code Description Price
F-CPL-V8013 10 0–80% Coupler, 1310 nm
F-CPL-V8015 20 0–80% Coupler, 1550 nm
F-CPL-V9913 30 0–99% Coupler, 1310 nm
F-CPL-V9915 40 0–99% Coupler, 1550 nm
F-CPL-VP8013 15 0–80% PM Coupler, 1310 nm
F-CPL-VP8015 25 0–80% PM Coupler, 1550 nm
F-CPL-VP9913 35 0–99% PM Coupler, 1310 nm
F-CPL-VP9915 45 0–99% PM Coupler, 1550 nm
Ordering Information
Minimum Coupling
Maximum Coupling
Please use the following Model Number to order our variable couplers with
connectors:
F-CPL-V-OPT- ■■■■- ■■■■F-CPL-VP-OPT- ■■■■- ■■■■
Model Connector Model *Connector
Code Style Code Style
Note: For connector price
information, see page 5-34.
Fiber Optic Connector Options
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The coupling ratio is varied by
changing the fiber separation.
StandardPM
PM Connector Style Code
FC/PC 47
FC/APC 57
FROM NEWPORT
SM Connector Style Code
ST/PC 25
FC/PC 45
FC/APC 55
SC/PC 65
SC/APC 75
Example: F-CPL-VP-OPT-25-57
Variable PM coupler with adjustable
coupling ratio from 0 to 80%, optimized
for 1550 nm, with FC/APC Connectors.
Typical
Coupling Ratio 0–80%
0–99%
Insertion Loss [dB] 0.05
Polarization Isolation [dB] –20
Dimensions [mm] 25 x 38 x 63
(Micrometer – 28 long)
