Whispering gallery mode microcavities for photonic sensing applications

用于光子传感应用的回音壁模式微腔

• 批准号: RGPIN-2015-05808
• 负责人: Meldrum, Alkiviathes
• 金额: $ 2.04万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=590654
• 关键词: Whispering; gallery; mode; microcavities; photonic

Light interacts with everything it touches. Whenever light passes through a substance or reflects from a surface, its properties are affected in ways that can give important information about the environment. Photonic sensors use light to “sense” the surroundings on a length scale that is truly tiny. Being small is important; it can reduce cost, increase portability for operation “in the field”, yield fast results, and minimize the need for large and expensive laboratories. Photonic sensors can be used in a considerable range of applications and are being developed by research groups and companies worldwide. Applications range from hand-held toxic gas sensors to the detection of disease in at-risk populations. Making a photonic sensor for a particular application can be difficult, however. Many competing effects can “overlap”, making it hard to detect the presence of the specific substance of interest. Many analytes are chemically complex (e.g., blood), and it is hard to be selective for only one specific target. Also, one must typically detect very weak signals.

每当光穿过物质或从表面反射时，光都会与它所接触的物体相互作用，其特性会受到影响，从而可以提供有关环境的重要信息。真正的小型化非常重要；它可以降低成本，提高“现场”操作的便携性，快速产生结果，并最大限度地减少对大型和昂贵实验室的需求，并且可以在相当多的应用中使用。由世界各地的研究小组和公司开发。应用范围从手持式有毒气体传感器到高危人群的疾病检测，然而，为特定应用制造光子传感器可能很困难，许多竞争效应可能会“重叠”，从而很难检测到危险人群的疾病。许多分析物的化学性质很复杂（例如血液），并且很难仅对一种特定目标进行选择性检测，而且通常必须检测非常微弱的信号。