Title:
SPECTRAL DEVICE, SPECTRAL METHOD, AND ANALYZER
Document Type and Number:
Japanese Patent JP2016166841
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a spectral device that can detect a polarization state at a selected wavelength.SOLUTION: There is provided a spectral device separating a specific-wavelength component in an input signal, using a diffraction grating 15. The spectral device includes: a PBS (11); a PBS (12P); a PBS (12S); a first polarization rotation part (13P), a second polarization rotation part (13S); a diffraction grating (15); and a folding part (16), the PBS (12P) separating a polarized light with a specific wavelength incoming from the first polarization rotation part (13P) by reflection and the PBS (12S) separating a polarized light with a specific wavelength incoming from the second polarization rotation part (13S) by reflection.SELECTED DRAWING: Figure 1
Inventors:
TSUDA YUKIO
Application Number:
JP2015047629A
Publication Date:
September 15, 2016
Filing Date:
March 10, 2015
Export Citation:
Assignee:
ANRITSU CORP
International Classes:
G01J3/18; G01J4/04
Domestic Patent References:
| JP2002323374A | 2002-11-08 | |||
| JP2012163534A | 2012-08-30 | |||
| JP2012222747A | 2012-11-12 | |||
| JPH05281041A | 1993-10-29 | |||
| JP2013160701A | 2013-08-19 | |||
| JP2003083810A | 2003-03-19 | |||
| JP2006042234A | 2006-02-09 |
Attorney, Agent or Firm:
Kenji Okada
Katsuhiro Imashita
Katsuhiro Imashita
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