公开(公告)号：US4884858A

公开(公告)日：1989-12-05

申请号：US272828

申请日：1988-11-18

Applicant: Takashi Ushikubo ,  Hideaki Okayama ,  Masato Kawahara ,  Issei Asabayashi

Inventor： Takashi Ushikubo ,  Hideaki Okayama ,  Masato Kawahara ,  Issei Asabayashi

IPC: G02B6/12 ,  G02F1/025 ,  G02F1/313

CPC classification number: G02F1/3133 ,  G02F2201/063

Abstract: In an electro-optic distributed coupler switch having a parallel rib geometry, a coupling enhancement region formed of the same material as the upper cladding layers but of lower step height is located between the ribs. By increasing the electric field strength, the coupling enhancement region enables the coupling length L.sub.c to be reduced.

Abstract translation: 在具有平行肋几何形状的电光分布耦合器开关中，由与上包层相同的材料形成但具有较低台阶高度的耦合增强区域位于肋之间。 通过提高电场强度，耦合增强区域能够减小耦合长度Lc。