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Optimized design of temperature-insensitive optical waveguide coupler with 120-nm bandwidth using fluorinated
Baoxue Chen1, Hongliang Lu, Dexin Zhao
1College of Optics and Electronic Information Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Applied Optics
|January 28, 2003
Summary
This study presents a novel method for designing temperature-insensitive optical waveguide couplers using fluorinated polyimide. The optimized design ensures minimal temperature variance for stable performance across a wide bandwidth and temperature range.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
Background:
- Optical waveguide couplers are essential components in photonic integrated circuits.
- Temperature fluctuations can significantly degrade the performance of optical devices.
- Fluorinated polyimides offer potential for developing temperature-stable optical components.
Purpose of the Study:
- To present a method for designing temperature-insensitive optical waveguide couplers.
- To achieve a 3-dB waveguide coupler with minimal temperature variance.
- To optimize coupler performance using fluorinated polyimide properties.
Main Methods:
- Characterization of temperature and dispersion properties of fluorinated polyimide.
- Design of a 3-dB waveguide coupler based on material characteristics.
- Verification of the design through three-dimensional beam propagation simulation.
Main Results:
- A 3-dB waveguide coupler with a 120-nm bandwidth was designed.
- The coupler exhibited a coupling ratio of 50 +/- 0.7% within the 1490-1610 nm waveband.
- Minimal temperature variance was achieved across a temperature range of -10 to 40 degrees C.
Conclusions:
- The proposed design method effectively creates temperature-insensitive optical waveguide couplers.
- Fluorinated polyimide is a suitable material for stable optical coupler fabrication.
- The simulated device demonstrates high performance stability over a relevant operational range.