Normalized Power Propagation
on 1x6 Fiber Coupler
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Abstract
The simulation of normalized power propagation on interaction region of 1x6
monolithic fiber coupler is reported. Power distribution on fiber couplers is much
affected by arrangement of fibers. The theoretical model has been used to
calculate power coupling propagation on linear and pentagonal arrangement of
1x6 fiber coupler. The calculation is based on a matrix transfer which is the
solution of coupled-mode theory. The six parallel fiber is in linear array and
pentagonal placement. By launching input power to single input of 1x6 monolithic
fiber couplers for both configurations, power distribution shows how the initial
power is distributed to the others. It is found that linear configuration
cannot initiate its power to the initial fiber, and maximum peak is not periodically
such as power propagation on 1x2 and 1x3 fiber coupler. By changing the
arrangement to be a pentagonal and one fiber as in the center where input power is
launched, the input power will be distributed identically from the center to five
surrounding fibers. At certain coupling length, about 4.7 mm and 6.3 mm, six
fibers with pentagonal configuration will have identical output power for
wavelength input 1550 and 1310 nm respectively. Based on this distribution, 1x6
monolithic fiber couplers are applicable as a power divider.
Keyword: 1x6 monolithic fiber couplers, power propagation, linear and
pentagonal configuration