US 12,424,812 B2
Optical amplification device and optical amplification method
Satoshi Mikami, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/423,071
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Jan. 22, 2020, PCT No. PCT/JP2020/002070
§ 371(c)(1), (2) Date Jul. 14, 2021,
PCT Pub. No. WO2020/158532, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-014765 (JP), filed on Jan. 30, 2019.
Prior Publication US 2022/0102932 A1, Mar. 31, 2022
Int. Cl. H01S 3/094 (2006.01); H01S 3/067 (2006.01); H01S 3/091 (2006.01); H01S 3/0941 (2006.01); H01S 3/23 (2006.01); H04B 10/27 (2013.01); H01S 3/16 (2006.01)
CPC H01S 3/094061 (2013.01) [H01S 3/06754 (2013.01); H01S 3/0912 (2013.01); H01S 3/09415 (2013.01); H01S 3/2383 (2013.01); H01S 3/06708 (2013.01); H01S 3/1608 (2013.01); H04B 10/27 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical amplification device comprising:
a light source circuit configured to output a plurality of beams of excitation light generated by a plurality of light sources;
a first multiplexer/demultiplexer circuit configured to connect input to the plurality of light sources, split input light, and output split light as a plurality of beams of first distribution light;
a plurality of second multiplexer/demultiplexer circuits configured to connect input to the first multiplexer/demultiplexer circuit, couple and split input light, and output split light as a plurality of beams of second distribution light;
a plurality of gain media being excited by each of the plurality of beams of second distribution light;
the light source circuit including 2n of the light sources, n being an integer of 2 or more;
the first multiplexer/demultiplexer circuit for outputting 4n beams of the first distribution light in response to input from 2n of the light source circuit;
n of the second multiplexer/demultiplexer circuits configured to generate four beams of the second distribution light in response to four beams of the first distribution light; and
4n gain media.