Abstract
A 1 × 2 optical polymer waveguide splitter of dynamic power tuning capability with low excess loss and high tuning resolution is presented. The device was developed based on angular misalignment technique of plastic optical fiber (POF) by allowing predetermined power to split out asymmetrically to two output ports. Non-sequential ray-tracing simulation and mathematical expression of the waveguide outputs matched well to the measured data. Excess loss of the dynamically tunable power-splitter maintains in the range of 0.58–1.85 dB, while the measured splitting-ratio resolution between adjacent power-tuning points is ±0.5% for both output ports. This dynamic power-tuning device would lead to some practical applications such as monitoring, power-controlling applications and sensor.
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