公开(公告)号：US3562676A

公开(公告)日：1971-02-09

申请号：US3562676D

申请日：1967-12-18

Applicant: BELL TELEPHONE LABOR INC ,  BERKELEY HEIGHTS

Inventor： PARKER MARSENA R JR

IPC: H03H9/40 ,  H03H7/30

CPC classification number: H03H9/40

Abstract: AN INTERMEDIARY GRADED GRATING IS POSITIONED IN THE BEAM PATH BETWEEN THE INPUT AND OUTPUT GRADED GRATINGS USUALLY FOUND IN A PERPENDICULAR DIFFRACTION DELAY LINE. THE INTERMEDIARY GRATING INTERCEPTS THE BEAMS AND REDIFFRACTS DESIRED ORDERS OF THEM TO THE OUTPUT GRATING AT ANGLES DIFFERENT FROM THEIR ANGLES OF INCIDENCE WITHOUT LOSS OF THE INHERENT AVERAGING PROPERTIES OF THE PERPENDICULAR DIFFRACTION DELAY LINE. THE INTERMEDIARY GRATING MAY BE EITHER REFLECTING OR TRANSMITTING.

公开(公告)号：US3522557A

公开(公告)日：1970-08-04

申请号：US3522557D

申请日：1963-07-19

Applicant: BELL TELEPHONE LABOR INC

Inventor： DUNCAN ROBERT S ,  PARKER MARSENA R JR

IPC: G10K11/32 ,  H03H9/13 ,  H03H9/40 ,  H03H9/30

CPC classification number: H03H9/40 ,  G10K11/32