Patents Assigned to OPTOELECTRONICS RESEARCH CENTER, TAMPERE UNIVERSITY OF TECHNOLOGY
  • Patent number: 8433168
    Abstract: A section of active optical fiber (11) which comprises an active core (1), an inner cladding layer (2) and an outer cladding layer (3). The diameter of said core 1) and the thickness of said inner cladding (2) change gradually along the length of said section of active optical fiber (11). This forms tapered longitudinal profile enabling a continuous mode conversion process along the length of the section of fiber (11). The method for fabricating a section of tapered active optical fiber comprises the steps of fabricating a preform for drawing active optical fiber from said preform, installing said preform into a drawing tower, drawing optical fiber in said drawing tower and altering at least one of the two parameters including the take-off preform speed and the take-up fiber speed during drawing of the optical fiber.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: April 30, 2013
    Assignee: Optoelectronics Research Center, Tampere University of Technology
    Inventors: Valery Filippov, Yuriy Chamorovskiy, Oleg Okhotnikov, Markus Pessa
  • Publication number: 20100247047
    Abstract: A section of active optical fiber (11) which comprises an active core (1), an inner cladding layer (2) and an outer cladding layer (3). The diameter of said core 91) and the thickness of said inner cladding (2) change gradually along the length of said section of active optical fiber (11). This forms tapered longitudinal profile enabling a continuous mode conversion process along the length of the section of fiber (11). The method for fabricating a section of tapered active optical fiber comprises the steps of fabricating a perform for drawing active optical fiber from said perform, installing said perform into a drawing tower, drawing optical fiber in said drawing tower and altering at least one of the two parameters including the take-off perform speed and the take-up fiber speed during drawing of the optical fiber.
    Type: Application
    Filed: September 29, 2008
    Publication date: September 30, 2010
    Applicant: OPTOELECTRONICS RESEARCH CENTER, TAMPERE UNIVERSITY OF TECHNOLOGY
    Inventors: Valery Filippov, Yuriy Chamorovskiy, Oleg Okhotnikov, Markus Pessa