title: High-gain optical amplification in Eu(3+)-doped polymer.
abstract: Europium (Eu(3+))-doped epoxy-based resin Norland optical adhesive (NOA) polymers have been prepared and characterized optically. Quartz capillary tube encapsulated Eu(3+)-doped NOA polymeric waveguides have been fabricated via a simple withdrawal molding technique. Optical amplification at 612 nm wavelength has been demonstrated in these waveguide devices, and the signal enhancements for different lengths of the devices have been measured. A maximum signal enhancement of ~30 dB has been obtained for a 16 mm long device.
authors.affiliation: Department of Electronic Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong.
authors.forename: Kwok Chu
authors.initials: KC
authors.lastname: Tsang
authors.forename: Chun-Yuen
authors.initials: CY
authors.lastname: Wong
authors.forename: Edwin Yue Bun
authors.initials: EY
authors.lastname: Pun
mesh_terms: D000042:Absorption; D005063:Europium / Q000737:chemistry*; D008163:Luminescent Measurements; D055620:Optical Phenomena; D009942:Organometallic Compounds / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D012815:Signal Processing, Computer-Assisted; D013056:Spectrophotometry, Ultraviolet
chemical_list: D009942:Organometallic Compounds; D011108:Polymers; D005063:Europium