Title:
OPTICAL FIBER AMPLIFIER AND RARE EARTH-ADDED OPTICAL FIBER
Document Type and Number:
WIPO Patent Application WO/2021/199193
Kind Code:
A1
Abstract:
The purpose of the present disclosure is to achieve a cladding excitation type rare earth-added optical fiber amplifier with high light-to-light conversion efficiency. The present disclosure provides an optical fiber amplifier having a light-concentrating structure for concentrating excitation light, which propagates through a cladding part, onto a core part in the longitudinal direction of a rare earth-added optical fiber.
Inventors:
AOZASA SHINICHI (JP)
YAMASHITA YOKO (JP)
MATSUI TAKASHI (JP)
NAKAJIMA KAZUHIDE (JP)
SAKAMOTO TAIJI (JP)
HANZAWA NOBUTOMO (JP)
ARAKI NORIYUKI (JP)
IMADA RYOTA (JP)
SAGAE YUTO (JP)
YAMASHITA YOKO (JP)
MATSUI TAKASHI (JP)
NAKAJIMA KAZUHIDE (JP)
SAKAMOTO TAIJI (JP)
HANZAWA NOBUTOMO (JP)
ARAKI NORIYUKI (JP)
IMADA RYOTA (JP)
SAGAE YUTO (JP)
Application Number:
PCT/JP2020/014645
Publication Date:
October 07, 2021
Filing Date:
March 30, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H01S3/10; G02B6/02; G02B6/32
Domestic Patent References:
| WO2012172996A1 | 2012-12-20 |
Foreign References:
| JP2010108999A | 2010-05-13 | |||
| JP2001332788A | 2001-11-30 | |||
| JP2005115176A | 2005-04-28 | |||
| JP2007094350A | 2007-04-12 | |||
| JP2004138720A | 2004-05-13 | |||
| JP2005196089A | 2005-07-21 | |||
| JPH1093176A | 1998-04-10 | |||
| JP2009187010A | 2009-08-20 |
Attorney, Agent or Firm:
OKADA, Kenji et al. (JP)
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