公开(公告)号：JPH11316310A

公开(公告)日：1999-11-16

申请号：JP5655899

申请日：1999-03-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LASKOWSKI EDWARD JOHN ,  MUEHLNER DIRK JOACHIM

IPC: G02B6/12

Abstract: PROBLEM TO BE SOLVED: To provide a small-sized Mach-Zehnder interferometer. SOLUTION: In an optical interferometer 19 having a pair of optical waveguides 21 and 22 extended between a pair of optical coupler areas, the optical waveguides 21 and 22 have optical paths different by length between optical coupler areas which give a maximum transmission volume and a minimum transmission volume, and each of the pair of optical waveguides has a reflector part C which optically couples first and second segment parts A and B.

公开(公告)号：JPH1174588A

公开(公告)日：1999-03-16

申请号：JP20416198

申请日：1998-07-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HENRY CHARLES H ,  INNISS DARYL ,  LASKOWSKI EDWARD JOHN ,  MILBRODT MICHELE ANN

IPC: H01S3/07 ,  G02B6/122 ,  G02B6/125 ,  G02B6/30 ,  H01S3/06 ,  H01S3/0933 ,  H01S3/094

Abstract: PROBLEM TO BE SOLVED: To constitute a vertically aligned high power output stack by an arrangement wherein a planar waveguide has individual first ends spaced apart in the lateral and vertical directions along the first edge of a substrate, and second ends aligned laterally on the second edge of the substrate. SOLUTION: An input waveguide has ends 12A, 12B and 12C aligned laterally and it can be coupled with a plurality of light source arrays while output waveguides 14A, 14B and 14C are aligned vertically in order to be coupled with a single fiber laser. A plurality of light sources 20-22 a linear array can be aligned with a plurality of ends 12A of individual waveguides. In order to facilitate coupling with the light source, a base of appropriate level can be provided at the input edge of a substrate so that the light source array is aligned with the input waveguide in the vertical direction. Similarly, a V- groove can be made in the output edge in order to align the fiber laser with a stack of output waveguides 14A, 14B and 14C. According to the arrangement, a vertically aligned high power output stack can be constituted.