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.