OPTICAL DEVICE WITH A NON RECIPROCAL POLARIZATION ROTATOR

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EP 0 305 430 A1

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(43)	Date of publication:
	08.03.1989 Bulletin 1989/10

(21)	Application number: 88901888.0

(22)	Date of filing: 26.02.1988

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International Patent Classification (IPC):

G02B 27/ 28^{( . )}
G02F 1/ 09^{( . )}
G02F 1/ 35^{( . )}
H04B 10/ 24^{( . )}

G01R 33/ 032^{( . )}
G02F 1/ 21^{( . )}
G02F 3/ 00^{( . )}

(86)	International application number:
	PCT/GB1988/000133

(87)	International publication number:
	WO 1988/006745 (07.09.1988 Gazette 1988/20)

(84)	Designated Contracting States:
	DE FR NL

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Priority:

26.02.1987 GB 19870004528

(71)	Applicant: PLESSEY OVERSEAS LIMITED
	Ilford Essex IG1 4AQ (GB)

(72)	Inventors:
	STEWART, William, James Blakesley Northants NN12 8RE (GB) EDGE, Colin Northampton Northants NN1 3PZ (GB)

(74)	Representative: Elliott, Frank Edward
	The Plessey Company plc. Intellectual Property Department Vicarage Lane Ilford, Essex IG1 4AQ Ilford, Essex IG1 4AQ (GB)

(54)	OPTICAL DEVICE WITH A NON RECIPROCAL POLARIZATION ROTATOR