Title:
マルチモード送光ファイバを用いた光信号ノイズの緩和
Document Type and Number:
Japanese Patent JP2013501893
Kind Code:
A
Abstract:
An apparatus and methods for measuring combustion parameters in the measurement zone of a gas turbine engine. The measurement zone is defined as being between an outer casing and an engine component having a reflecting surface inside the outer casing. The apparatus comprises a laser generating a transmitting beam of light of a select wavelength and a multimode transmitting fiber optically coupled to the laser. A transmitting optic is optically coupled to the multimode optical fiber for transmitting the beam into the measurement zone. The reflecting surface is configured to provide a Lambertian reflection. A receiving optic is positioned to receive the Lambertian reflection. Means are provided in operative association with the multimode transmitting fiber for averaging modal noise induced signal level variation of light propagating within the multimode transmitting fiber.
Inventors:
Bernard Patrick Masterson
James Howell
Henrik Hoff Bander
Andrew Dee Sappei
James Howell
Henrik Hoff Bander
Andrew Dee Sappei
Application Number:
JP2012524791A
Publication Date:
January 17, 2013
Filing Date:
August 10, 2010
Export Citation:
Assignee:
Zoro Technologies, Inc.
International Classes:
F02C9/00; F01D25/00; G01N21/35
Domestic Patent References:
| JP2006522938A | 2006-10-05 | |||
| JP2009515079A | 2009-04-09 | |||
| JP2007534983A | 2007-11-29 | |||
| JP2006522938A | 2006-10-05 | |||
| JP2009162762A | 2009-07-23 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tomohiro Minamiyama
Koichi Itsubo
Ryoichi Hagiwara
Ryu Kobayashi
Jun Tsuruta
Tomohiro Minamiyama
Koichi Itsubo
Ryoichi Hagiwara
Ryu Kobayashi