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:
Aug. 05, 2014
Filed:
Jul. 08, 2010
Masatoshi Fujimoto, Hamamatsu, JP;
Yoichi Kawada, Hamamatsu, JP;
Kodai Fukazawa, Hamamastsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
An input light pulse Pi, input at a constant incident angle to a transmission-type diffraction grating, is dispersed according to the wavelengths to be output at output angles according to the wavelengths, to be reflected by reflecting mirrors, andin series, and thereafter, the light rays are input at incident angles according to their wavelengths to the transmission-type diffraction grating, to be output at a constant output angle from the transmission-type diffraction grating. The optical path for the light rays of respective wavelength components, output at the constant output angle from the transmission-type diffraction grating, is folded back by a rectangular prism, to be input at a constant incident angle to the transmission-type diffraction grating, and the light rays are output at output angles according to their wavelengths, to be reflected by the reflecting mirrors, andin series, and are thereafter input at incident angles according to their wavelengths to the transmission-type diffraction grating. The light rays, input at the incident angles according to their wavelengths to the transmission-type diffraction grating, are coupled by the transmission-type diffraction grating, to be output as an output light pulse Po. Thereby, realizing the pulse width conversion device and the optical amplifier system, which are easily downsized.