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A Compact Soft-lithography Based Y-branch Optical Power Splitter

Author: LouZuoZuo
Tutor: WuXingKun
School: Zhejiang University
Course: Optical Engineering
Keywords: Optical power splitter Soft lithography Optical waveguide Beam propagation method FTTH Passive Optical Network
CLC: TN256
Type: Master's thesis
Year: 2006
Downloads: 109
Quote: 1
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Abstract


Driven by growing broadband services to business and access needs, the fiber-to-the-home (FTTH) to become ideal access network technology, with its great bandwidth. Large-scale deployment of passive optical network (PON) FTTH solutions need to rely on low-cost and high-performance passive optical components. Optical power splitter is a passive optical network core optical devices, Y branch optical power splitter to study practical purposes, a new structure, compared with the traditional cascaded Y bifurcation can significantly reduce the volume; and the soft lithography process used in the production of the device, and greatly reduce the device cost, simplify the manufacturing process, increase production efficiency. The main content of this paper includes the following parts: First, in-depth study of the basic theory of optical waveguide. The optical waveguide transmission conditions and theoretical analysis method is described starting from the Maxwell equations. A the plane slab waveguide ray Theoretical analysis and electromagnetic field analysis, the strip waveguide Marca ladder where law and the equivalent index method. Focuses on practical optical waveguide numerical methods - beam propagation method, to lay a solid foundation for the design and analysis of the device. Then, to expand specific design and optimization of the structure of the Y branch optical power splitter. Including the input waveguide, output waveguide, Y bifurcation, connecting the local design of the waveguide, etc.. Using the optical waveguide the Numerical Simulation software BeamPROP TM Analysis Y bifurcation angle the the arc waveguide radius and central angle, length of the straight waveguide structure parameters such as insertion loss and spectral uniformity. The local comprehensive optimized design, gives the 1 × 8 and 1 × 16 Optical Power Splitter the final design program, numerical simulation results show that both have a lower insertion loss and a high degree of uniformity. Finally, the soft lithography method for the production of self-designed new Y branch optical power splitter. The master production using movement precision single-line engraving 0.1μm high precision CNC engraving machine, then through two steps reprographic devices silicone elastomer (PDMS) female mold, UV curing resin through the capillary into the mold (MIMIC ) process, filling the mold, and then covering the optical substrate, the use of the UV-curable molding, to form a self-supporting formula (stand-alone) structure. The finished optical power splitter conducted the actual performance testing, and the experimental results and the theoretical analysis of the combination of the proposed method to further improve the performance of the device.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Optical waveguide and integrated optics > Integrated optical devices
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