A resonant wavelength detection system based on a gradient grating period guided-mode resonance (GGP-GMR) filter and a linear charge-coupled device is demonstrated. The GGP-GMR used in this work consists of a subwavelength grating structure with a grating period varying from 250-550 nm in increments of 2 nm. We successfully demonstrate that by using this system, we can monitor the shift in a biosensor's dip wavelength caused by different sucrose concentrations. This technology has the potential to replace a bulky and expensive spectrometer used in most optical biosensor systems. Given its compactness, the system can be integrated with lab-on-A-chip systems for numerous biosensing applications.
|Title of host publication||Photonic Fiber and Crystal Devices|
|Subtitle of host publication||Advances in Materials and Innovations in Device Applications XII|
|Editors||Shizhuo Yin, Ruyan Guo|
|State||Published - 1 Jan 2018|
|Event||Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII 2018 - San Diego, United States|
Duration: 19 Aug 2018 → 20 Aug 2018
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Conference||Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII 2018|
|Period||19/08/18 → 20/08/18|
- Optical sensing and sensors.
- Spectrometers and spectroscopic instrumentation
- Subwavelength structures