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EPIC Online Technology Meeting on Hybrid Photonic Integrated Circuits
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Engineers, researchers, and students interested in advanced optical technologies and integrated circuit design should watch this video.
TL;DR
This video introduces hybrid photonic integrated circuits (HPICs), a technology that combines different optical components onto a single chip. It highlights the advantages of HPICs, such as material flexibility and improved yield, and showcases applications like tunable lasers and advanced filtering.
Key Takeaways
- Hybrid photonic integration allows combining diverse optical components like lasers, detectors, and waveguides on separate dies, overcoming material limitations of monolithic approaches.
- This technique enables the use of specialized materials for each component, leading to higher performance and broader wavelength capabilities compared to single-material systems.
- Hybrid integration facilitates the incorporation of micro-optical elements such as isolators, filters, and lenses directly onto the photonic integrated circuit.
- The approach allows for yield management benefits by enabling the combination of non-perfect dice onto a single functional chip.
- Polymer-based waveguides are utilized, fabricated on wafer scales with potential for further scaling, offering low loss and simplified fiber coupling.
- Tunable lasers can be realized through hybrid integration by coupling semiconductor gain elements to passive waveguide chips with inscribed gratings.
- This method supports creating tunable lasers across different wavelengths, including visible light, by adapting gain elements and optical cavities.
- Thin-film elements can be integrated to provide efficient optical filtering functionalities, transferring free-space optics performance to integrated platforms.
In This Video
- 00:00Introduction to EPIC and Hybrid PICs
EPIC, the largest photonics association, hosts a meeting on hybrid photonic integrated circuits, highlighting industry involvement.
- 01:19Speakers and Agenda Overview
The meeting features speakers from HHI, Excel, Vangard, Nanoscribe, Chilas, VPI, and Alon Photonics.
- 03:48HHI's Hybrid Integration Activities
HHI discusses hybrid integration, combining semiconductor and passive waveguide platforms for versatile applications.
- 04:38Photonic Integration Concepts
Photonic integration aims to miniaturize optical functionalities onto chips, offering multi-purpose platforms for various uses.
- 05:08Monolithic vs. Hybrid Integration
Monolithic integration uses a single die, limited by material properties. Hybrid integration combines separate dies for flexibility.
- 07:35Advantages of Hybrid Integration
Hybrid integration allows combining diverse optical components and offers better yield management by using non-good dice.
- 09:29HHI's Integration Approach
HHI integrates semiconductor components with passive waveguide platforms and micro-optical elements like isolators and filters.
- 11:01Tunable Laser Integration
HHI demonstrates tunable lasers using InP gain chips coupled to polymer waveguides with inscribed gratings.
- 12:36Thin Film Elements in PICs
Thin film elements are used for optical filtering and polarization beam splitting in integrated optics.
Questions & Answers
What is hybrid photonic integration?
Hybrid photonic integration combines active and passive optical components fabricated on separate dies, then assembled onto a single chip, allowing for the use of optimal materials for each function.
What are the advantages of hybrid photonic integration over monolithic integration?
Hybrid integration allows combining diverse materials and components without redeveloping from scratch, offers better component specifications, and enables yield management by using non-good dice.
What materials are used for waveguides in hybrid photonic integration?
Polymer materials are used for waveguides, fabricated on wafer scales up to 8 inches, with single-mode properties and low effective index contrast.
How are lasers made tunable in hybrid photonic circuits?
Tunable lasers are realized by coupling a semiconductor gain element to a polymer waveguide with an inscribed Bragg grating, using thermo-optical tuning for wavelength adjustment.
What are thin-film elements used for in photonic integration?
Thin-film elements, like dielectric layer stacks, are used to transfer efficient filtering characteristics from free space into integrated optics, enabling functionalities like polarization beam splitters.
What is EPIC and what services does it offer?
EPIC is the largest photonics industry association globally, with over 800 company members, offering technology marketing and business consultations.
Key Terms
- Hybrid Photonic Integration — A technique combining active and passive optical components fabricated on separate substrates onto a single chip.
- Monolithic Integration — Fabricating all optical components, both active and passive, on a single semiconductor die.
- Bragg Grating — A periodic variation in the refractive index of an optical medium used for wavelength filtering or as a mirror in laser cavities.
- Micro-transfer Printing — A technique used to assemble different dies, including semiconductor components, onto passive substrates in hybrid integration.