| 摘要(英) |
In this thesis, the design of a receiver optical sub-assembly for 4 channel × 25-Gbps optical interconnect module using a glass interposer structure is proposed. The photodiode, transimpedance amplifier (TIA), microlens, and polymer waveguide will be integrated on the glass interposer. The PD and TIA are integrated on one side of the glass interposer by using flip-chip packaging, and connecting with each other through the high-frequency transmission lines. The microlens array is fabricated on the other side of glass interposer to converge optical signal reflected by the polymer waveguide’s 45° mirror.
The PD is replaced by a core of 50-μm diameter multimode fiber (MMF) to measure optical characteristics in the receiver optical system. The maximum optical coupling efficiency in the optical system is 37%. The alignment tolerance at 1-dB level for PD and MMF is larger than ±10 μm, it can be a reference for integrating PD into glass interposer in the future.
The design of high-frequency transmission lines include single-ended and differential transmission lines, but in this research only single-ended transmission lines. The measurement frequency scale is from 1~62.5 GHz, return loss of two different type single-ended transmission lines are higher than 20 dB, and insertion loss are lower than 1 dB. |
| 參考文獻 |
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