Photonic Chip Packaging and Extreme Environments.

Researchers at the National Institute of Standards and Technology (NIST) have developed a new way to package photonic integrated circuits — tiny chips that convey information using light instead of electricity — so they can survive and operate in extreme environments, from scorchingly hot industrial settings to ultracold vacuum chambers and the depths of outer space.

In the world of chip manufacturing, “packaging” refers to the protective housing and connection system that surrounds a chip and links it to the outside world, including optical fibers, electrical contacts and other components. Good packaging allows the chips to be used in compact, reliable devices without damage or misalignment.

Photonic integrated chips have a particular advantage because they transmit data at high speeds while consuming far less power than conventional chips — but only if the packaging can keep delicate optical connections perfectly aligned.

Photonic integrated chips already play a central role in telecommunications, medical diagnostics and advanced sensing. But their use in demanding environments has remained limited. Traditional packaging fails to maintain reliable connections between photonic chips and optical fibers in extreme conditions — such as intense radiation, ultrahigh vacuum, blistering heat or frigid temperatures. Source/Photo: www.nist.gov

NIST 研究人員開發出能承受極端環境的光子晶片封裝技術。美國國家標準與技術研究院（NIST）的研究人員開發出一種封裝光子積體電路（即利用光而非電來傳輸資訊的微型晶片）的新方法，使其能夠在極端環境下（從酷熱的工業現場到超低溫真空室，乃至深空環境）保持完好並正常工作。

在晶片製造領域，「封裝」是指環繞晶片並將其與外部世界（包括光纖、電觸點及其他組件）連接起來的保護性外殼與連接系統。優質的封裝能確保晶片在緊湊、可靠的設備中運行，且不會發生損壞或對齊偏差。

光子整合晶片具有顯著優勢：它們既能高速傳輸數據，又能比傳統晶片大幅降低能耗——但這有一個前提，即封裝必須能確保精密的光學連接始終保持完美對齊。

光子整合晶片已在電信、醫療診斷和先進感測領域發揮核心作用，但其在嚴苛環境下的應用仍受到限制。在強輻射、超高真空、極高溫或極低溫等極端條件下，傳統封裝技術往往無法維持晶片與光纖之間可靠的連接。