We have developed a novel system to detect the wavelength of an optical beam that is compact, inexpensive, yet capable of extremely high wavelength resolution. The system is comprised of a one-dimensional photonic crystal slab (PCS) narrowband reflectance filter operating as a position sensitive sensor and a linear charge-coupled device (CCD) sensor array. Depending on the wavelength of the incident light, the PCS provides a transmission minimum at different locations along its length, as shown in Fig. 1. The position of the transmission minimum is recorded by the CCD sensor array and is used to determine the incident wavelength. Using this technique, we show that wavelength changes as small as 0.011 nm can be resolved. Such a system could be utilized for a wide variety of applications including spectroscopic identification of compounds and rapid testing of light emitters such as light emitting diodes (LEDs) and Organic LEDs, in a compact and economical fashion.

Original languageEnglish (US)
Title of host publicationLEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings
Number of pages2
StatePublished - 2007
Event20th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS - Lake Buena Vista, FL, United States
Duration: Oct 21 2007Oct 25 2007

Publication series

NameConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
ISSN (Print)1092-8081


Other20th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS
Country/TerritoryUnited States
CityLake Buena Vista, FL

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


Dive into the research topics of 'Wavelength detection using narrowband reflectance filters'. Together they form a unique fingerprint.

Cite this