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Characterization studies of photonic wire bonding for fiber array integration.
Optics Express
|May 4, 2026
Summary
Photonic wire bonding (PWB) offers low-loss integration for photonic devices. Studies show that offsets in fiber-integrated PWBs increase transmission loss, impacting performance in optical systems.
Area of Science:
- Optoelectronics
- Materials Science
- Photonics Packaging
Background:
- Traditional photonic interconnects face challenges with precise alignment.
- Photonic wire bonding (PWB) utilizes two-photon polymerization for device integration.
- PWB technology aims to reduce transmission loss in optical systems.
Purpose of the Study:
- To investigate the impact of offsets and misalignment on PWB performance.
- To analyze the loss characteristics of fiber-integrated PWBs under various offset conditions.
- To evaluate the power-handling capabilities of PWBs for integrated photonic systems.
Main Methods:
- Theoretical and experimental analysis of PWB loss properties.
- Examination of horizontal and vertical offsets in fiber-PWB connections.
- Assessment of misalignment tolerances between input fiber and PWB core.
Main Results:
- Average experimental loss for a straight fiber-PWB-fiber connection is ~1.41 dB.
- Introducing 20 µm horizontal and 10 µm vertical offsets increases loss to ~2.92 dB.
- Offset-induced bending significantly influences PWB loss characteristics.
Conclusions:
- PWB technology provides a viable alternative for low-loss photonic integration.
- Offsets and misalignment in fiber-PWB connections lead to increased transmission loss.
- Further investigation into PWB power handling is crucial for practical applications.
