Patents by Inventor Mircea Hotoleanu

Mircea Hotoleanu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fiber structure and a method for discriminating high order modes in the fiber structure
    Patent number: 8934749
    Abstract: The invention relates to a fiber structure (700), which has one or more refractive index disturbances (750, 760) outside a fiber core (710) for discriminating one or more high order modes in the fiber structure. The invention also relates to a method for discriminating one or more high order modes, an arrangement having the high order modes discriminating fiber structure, and a device having the high order mode discriminating fiber structure.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: January 13, 2015
    Assignee: Liekki Corporation
    Inventors: Mircea Hotoleanu, Emil Voiculescu, Bogdan Ghete
  • Optical fiber structure and a method of producing thereof
    Patent number: 8620126
    Abstract: An optical waveguide including a core, a buffer surrounding the core, and a cladding surrounding the buffer. The core, the buffer and the cladding include silica glass. A refractive index of the buffer is substantially equal to a refractive index of pure amorphous silica glass. The buffer may reduce bubble formation during manufacturing and may facilitate splicing of the waveguide. A numerical aperture of the waveguide may be fine-tuned by adjusting a radial dimension of the buffer in order to compensate variations in the refractive index of the core.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: December 31, 2013
    Assignee: nLight Oy
    Inventors: Markku Rajala, Mircea Hotoleanu, Per Stenius, Harri Valkonen, Simo Tammela, Pauli Kiiveri
  • OPTICAL FIBER STRUCTURE AND A METHOD OF PRODUCING THEREOF
    Publication number: 20100220965
    Abstract: An optical waveguide including a core, a buffer surrounding the core, and a cladding surrounding the buffer. The core, the buffer and the cladding include silica glass. A refractive index of the buffer is substantially equal to a refractive index of pure amorphous silica glass. The buffer may reduce bubble formation during manufacturing and may facilitate splicing of the waveguide. A numerical aperture of the waveguide may be fine-tuned by adjusting a radial dimension of the buffer in order to compensate variations in the refractive index of the core.
    Type: Application
    Filed: March 17, 2008
    Publication date: September 2, 2010
    Applicant: LIEKKI OY
    Inventors: Markku Rajala, Mircea Hotoleanu, Per Stenius, Harri Valkonen, Simo Tammela, Pauli Kiiveri
  • FIBER STRUCTURE AND A METHOD FOR DISCRIMINATING HIGH ORDER MODES IN THE FIBER STRUCTURE
    Publication number: 20090324168
    Abstract: The invention relates to a fiber structure (700), which has one or more refractive index disturbances (750 , 760) outside a fiber core (710) for discriminating one or more high order modes in the fiber structure. The invention also relates to a method for discriminating one or more high order modes, an arrangement having the high order modes discriminating fiber structure, and a device having the high order mode discriminating fiber structure.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Applicant: LIEKKI CORPORATION
    Inventors: Mircea Hotoleanu, Emil Voiculescu, Bogdan Ghete