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Kwon, Min-Suk
Ubiquitous Photonics Laboratory (UP Lab)
Research Interests
  • Photonics, plasmonics, waveguides, planar lightwave circuits

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Influence of the Parameters of a Heater Array Inducing a Thermooptic Long-Period Grating on Its Power Consumption

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Title
Influence of the Parameters of a Heater Array Inducing a Thermooptic Long-Period Grating on Its Power Consumption
Author
Kwon, Min-SukShin, Sang-Yung
Keywords
Gratings; Integrated optics; Optical waveguide filters; Thermooptic effects
Issue Date
2009-05
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
JOURNAL OF LIGHTWAVE TECHNOLOGY, v.27, no.9, pp.1108 - 1113
Abstract
We investigate experimentally and theoretically the power consumption of a notch filter using a thermooptic long-period grating, which is induced by a heater array consisting of periodic heaters and pads made of metal thin-film. Since the power consumed by the heater array is converted to joule heat that generates the thermooptic long-period grating, the characteristics of the notch filter are dynamically controlled by adjusting it. The power necessary for appropriate coupling efficiency depends on the parameters of the heater array, which are the width and length of a heater, pad width, and the thickness of the thin-film. To analyze the dependence, we fabricated several notch filters with different heater lengths and pad widths. In addition, we simulated the influence of the parameters on the power consumption using some approximation and assumptions. Through the experiment and the simulation, it is shown that the experimentally obtained changes of the consumed power depending on the parameters follow a trend achieved theoretically. Moreover, the experimental results show that the consumed power decreases by more than 50% as the heater length is reduced from 500 to 50 μm. Finally, we suggest a few guidelines on the parameters required to reduce the power consumption.
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DOI
10.1109/JLT.2008.929424
ISSN
0733-8724
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EE_Journal Papers
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