OPTICAL RELAY AND CONTROL METHOD FOR OPTICAL RELAY

WIPO Patent Application WO/2017/056438

A1

In order to provide a compact and low power consumption optical relay capable of amplifying a plurality of wavelength ranges, the optical relay is provided with: an excitation means which generates excitation light in a single wavelength range; a first light amplification means which is excited by the excitation light and the amplification band of which is a first wavelength range; and a second light amplification means which is excited by the excitation light and the amplification band of which is a second wavelength range different from the first wavelength range.

MIKAMI SATOSHI (JP)

PCT/JP2016/004217

April 06, 2017

September 15, 2016

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NEC CORP (JP)

H04B10/291; H04J14/00; H04J14/02

JP2001203644A

2001-07-27

FUJIWARA, MASAMICHI ET AL.: "Compact bi- directional EDFAs to support extended power budget class of TWDM-PON", 2015 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC, 27 September 2015 (2015-09-27), pages 1 - 3, XP032819964
MAKOTO YAMADA: "Ultra Wideband Amplification Technologies for Optical Fiber Amplifiers", THE JOURNAL OF THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, vol. 84, no. 4, 1 April 2003 (2003-04-01), pages 234 - 241, XP055473998
BARNARD, CHRIS, W. ET AL.: "Bidirectional fiber amplifiers", IEEE PHOTONICS TECHNOLOGY LETTERS, August 1992 (1992-08-01), pages 911 - 913, XP055372538
See also references of EP 3358761A4

SHIMOSAKA, Naoki (JP)

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