公开(公告)号：DE69722462T2

公开(公告)日：2004-02-19

申请号：DE69722462

申请日：1997-08-04

Applicant: IBM

Inventor： BONA GIAN-LUCA ,  GERMANN ROLAND ,  OFFREIN BERT JAN ,  SALEMINK HUUB W

IPC: G02B6/122 ,  G02B6/12 ,  G02B6/26

Abstract: A singlemode lightwaveguide-coupling element is positioned between an initial waveguide section which there has a basic final width (W0f) and a final waveguide section which there has a basic initial width (Wn+1i) which is bigger than the basic final width (W0f). The lightwave directions of both waveguide sections are inclined at a predetermined total angle (DELTAalpha) towards each other. Starting from the initial waveguide section, the lightwaveguide element comprises intermediate waveguide sections each of which at its end has a lightwave direction which is inclined towards the lightwave direction at its opposite end at an inclination angle (DELTAalphav), such that the sum of all inclination angles equals the predetermined total angle (DELTAalpha).

公开(公告)号：DE69418906T2

公开(公告)日：2000-01-27

申请号：DE69418906

申请日：1994-09-15

Applicant: IBM

Inventor： BONA GIAN-LUCA ,  GERMANN ROLAND ,  SALEMINK HUUB

IPC: G02F1/313 ,  C07C233/47 ,  C07C235/12 ,  C07C237/12 ,  C07C323/59 ,  C07D233/88 ,  G02F1/35 ,  G11C21/00 ,  H01S3/10

Abstract: PCT No. PCT/EP94/03095 Sec. 371 Date Feb. 27, 1997 Sec. 102(e) Date Feb. 27, 1997 PCT Filed Sep. 15, 1994 PCT Pub. No. WO96/08826 PCT Pub. Date Mar. 21, 1996The present invention concerns optical memories. Such an optical memory (30) comprises a data line (31) which is optically coupled via a directional waveguide coupler (33) to a circular memory loop (32). In addition, it comprises a pump line (35), which is employed in order to couple a refresh signal into the loop (32). As in case of the data line, the pump line is coupled via a directional waveguide coupler (34) to the loop (32). The counter propagating refresh light pulse provides for an amplification of the light pulse circulating in the memory loop being doped with Erbium ions. The length L of the memory loop (32) is chosen such that the circulation frequency of the light pulse in said loop (32) is equal to the clock frequency of the optical memory (30). The memory provides for individual manipulation of each stored optical bit.

公开(公告)号：DE69418906D1

公开(公告)日：1999-07-08

申请号：DE69418906

申请日：1994-09-15

Applicant: IBM

Inventor： BONA GIAN-LUCA ,  GERMANN ROLAND ,  SALEMINK HUUB

IPC: G02F1/313 ,  C07C233/47 ,  C07C235/12 ,  C07C237/12 ,  C07C323/59 ,  C07D233/88 ,  G02F1/35 ,  G11C21/00 ,  H01S3/10

Abstract: PCT No. PCT/EP94/03095 Sec. 371 Date Feb. 27, 1997 Sec. 102(e) Date Feb. 27, 1997 PCT Filed Sep. 15, 1994 PCT Pub. No. WO96/08826 PCT Pub. Date Mar. 21, 1996The present invention concerns optical memories. Such an optical memory (30) comprises a data line (31) which is optically coupled via a directional waveguide coupler (33) to a circular memory loop (32). In addition, it comprises a pump line (35), which is employed in order to couple a refresh signal into the loop (32). As in case of the data line, the pump line is coupled via a directional waveguide coupler (34) to the loop (32). The counter propagating refresh light pulse provides for an amplification of the light pulse circulating in the memory loop being doped with Erbium ions. The length L of the memory loop (32) is chosen such that the circulation frequency of the light pulse in said loop (32) is equal to the clock frequency of the optical memory (30). The memory provides for individual manipulation of each stored optical bit.

公开(公告)号：HK1063849A1

公开(公告)日：2005-01-14

申请号：HK04106477

申请日：2004-08-28

Applicant: IBM

Inventor： GERMANN ROLAND ,  HORAK DAVID V ,  SEKIGUCHI AKIHISA

IPC: G02B6/30 ,  G02B ,  H01L

Abstract: An apparatus for self-aligning an optical fiber to an optical waveguide. The apparatus includes an optical waveguide chip including: one or more optical waveguides formed on a first substrate, each optical waveguide having a protruding portion; and one or more alignment rails formed on the first substrate, each alignment rail spaced apart from each optical waveguide by a predetermined distance; and an alignment jig including: one or more grooves formed in a second substrate, each groove adapted to receive one protruding portion and each groove supporting one optical fiber in alignment with one optical waveguide; and one or more alignment grooves formed on the second substrate, each alignment groove spaced apart from the grooves by the predetermined distance and adapted to mate with the alignment rails.

公开(公告)号：DE69722462D1

公开(公告)日：2003-07-03

申请号：DE69722462

申请日：1997-08-04

Applicant: IBM

Inventor： BONA GIAN-LUCA ,  GERMANN ROLAND ,  OFFREIN BERT JAN ,  SALEMINK HUUB W

IPC: G02B6/122 ,  G02B6/12 ,  G02B6/26

Abstract: A singlemode lightwaveguide-coupling element is positioned between an initial waveguide section which there has a basic final width (W0f) and a final waveguide section which there has a basic initial width (Wn+1i) which is bigger than the basic final width (W0f). The lightwave directions of both waveguide sections are inclined at a predetermined total angle (DELTAalpha) towards each other. Starting from the initial waveguide section, the lightwaveguide element comprises intermediate waveguide sections each of which at its end has a lightwave direction which is inclined towards the lightwave direction at its opposite end at an inclination angle (DELTAalphav), such that the sum of all inclination angles equals the predetermined total angle (DELTAalpha).