公开(公告)号：US11722224B2

公开(公告)日：2023-08-08

申请号：US17428624

申请日：2019-05-27

申请人： Mitsubishi Electric Corporation

发明人： Ryosuke Nagao ,  Yuichiro Okunuki ,  Keisuke Matsumoto

IPC分类号： H04B10/50 ,  H04B10/61 ,  G02B6/42 ,  H01S5/026 ,  H04B10/80 ,  H04J14/02

CPC分类号： H04B10/614 ,  G02B6/425 ,  G02B6/4295 ,  H01S5/026 ,  H04B10/503 ,  H04B10/802 ,  H04J14/02

摘要： An optical device includes: lasers output first light from a front-end side and output second light from a rear-end side; an optical multiplexer circuit multiplex respective rays of the first light, to thereby send out output light; waveguides guide respective rays of the second light toward one end face of the optical device; and light detectors receive respective rays of reflected light that are due to reflection of the respective rays of the second light after being guided by the waveguides, on the one end face or on respective inclined end faces in concave portions formed on that one end face. The light detector is located between the rear-end side of the laser and the one end face or the inclined end face, and the second light is outputted diagonally relative to a perpendicular line with respect to the one end face or the inclined end face.

公开(公告)号：US09804330B1

公开(公告)日：2017-10-31

申请号：US15401311

申请日：2017-01-09

申请人： Mitsubishi Electric Corporation

发明人： Ryosuke Nagao ,  Yoshifumi Sasahata ,  Eitaro Ishimura

IPC分类号： H01S5/40 ,  G02B6/125 ,  G02B6/293 ,  G02B6/12 ,  H01S5/0625

CPC分类号： G02B6/125 ,  G02B6/12004 ,  G02B6/29344 ,  G02B6/2938 ,  G02B2006/12035 ,  G02B2006/12121 ,  H01S5/026 ,  H01S5/06256 ,  H01S5/0687 ,  H01S5/12 ,  H01S5/2022 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4056 ,  H01S5/4087 ,  H01S2301/02

摘要： According to the present invention, a semiconductor device includes a substrate comprising a front end face, a rear end face and side faces, a plurality of semiconductor lasers provided on the substrate, a forward optical multiplexer to multiplex forward output light of the plurality of semiconductor lasers and output the multiplexed light to the front end face, a backward optical multiplexer to multiplex backward output light of the plurality of semiconductor lasers and output the multiplexed light to the rear end face and a plurality of backward waveguides connected to an output section of the backward optical multiplexer, wherein the plurality of backward waveguides includes a main waveguide disposed at a center of the output section and a plurality of lateral waveguides disposed on both sides of the main waveguide to bend toward the side faces and output light from the side faces diagonally to the side faces.