The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2012
Filed:
Jun. 11, 2009
António B. Lobo Ribeiro, Maia, PT;
Irina Trifanov, Maia, PT;
Miguel Alexandre Ramos DE Melo, Gondomar, PT;
Martin Ole Berendt, Árvore, PT;
José António Ribera Salcedo, Oporto, PT;
Rosa M. Muniz, Oporto, PT;
António B. Lobo Ribeiro, Maia, PT;
Irina Trifanov, Maia, PT;
Miguel Alexandre Ramos De Melo, Gondomar, PT;
Martin Ole Berendt, Árvore, PT;
José António Ribera Salcedo, Oporto, PT;
Rosa M. Muniz, Oporto, PT;
Multiwave Photonics SA, , PT;
Abstract
The present invention provides an amplified spontaneous emission fiber optic source having high optical power (>20 mW) and a spectral broadband emission (>70 nm) centered near a wavelength of 1060 nm. In an embodiment of the invention, the fiber source comprises a combination of Yb-doped and Nd-doped silica fibers in a dual-pumping configuration. The Yb-doped optical fiber has a peak absorption coefficient of 350 dB/nm at 977 nm band, and the Nd-doped fiber used has a dopant concentration of 500 ppm-wt in a glass host of aluminum-germano-phospho-silicate. A combination of these two doped-fibers along with optical spectral filtering provides a broadband spectrum giving coherence length <7 μm (in air), which is well suited for optical coherence imaging.