COHERENT OPTICAL RECEIVERS - Patent 0227729

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EP 0 227 729 A1

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(43)	Date of publication:
	08.07.1987 Bulletin 1987/28

(21)	Application number: 86903514.0

(22)	Date of filing: 06.06.1986

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International Patent Classification (IPC):

G01R 15/ 24^{( . )}
G02F 1/ 01^{( . )}
H04B 10/ 00^{( . )}
H04B 10/ 06^{( . )}
H04B 10/ 148^{( . )}
H04L 27/ 18^{( . )}

G02B 27/ 28^{( . )}
G02F 2/ 00^{( . )}
H04B 10/ 04^{( . )}
H04B 10/ 142^{( . )}
H04B 10/ 152^{( . )}

(86)	International application number:
	PCT/GB1986/000327

(87)	International publication number:
	WO 1986/007513 (18.12.1986 Gazette 1986/27)

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI LU NL SE

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Priority:

06.06.1985 GB 19850014264

(71)	Applicant: BRITISH TELECOMMUNICATIONS public limited company
	London WC1E 6BA (GB)

(72)	Inventor:
	SMITH, David, William Braeside Mill Lane Suffolk (GB)

(74)	Representative: Wolff, Eric
	BRITISH TELECOM Intellectual Property Unit 13th Floor 151 Gower Street London WC1E 6BA London WC1E 6BA (GB)

(54)	COHERENT OPTICAL RECEIVERS