(19)
(11) EP 1 312 174 A2

(12)

(88) Date of publication A3:
27.02.2003

(43) Date of publication:
21.05.2003 Bulletin 2003/21

(21) Application number: 01972915.1

(22) Date of filing: 01.06.2001
(51) International Patent Classification (IPC)7: H04B 10/00
(86) International application number:
PCT/US0117/831
(87) International publication number:
WO 0109/3464 (06.12.2001 Gazette 2001/49)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 02.06.2000 US 208481 P
26.07.2000 US 220951 P

(71) Applicant: Lightchip, Inc.
Salem, NH 03079 (US)

(72) Inventors:
  • SUSSMAN, Michael
    Winchester, MA 01890 (US)
  • TURNER, Ian
    Stratham, NH 03885-2332 (US)

(74) Representative: HOFFMANN - EITLE 
Patent- und RechtsanwälteArabellastrasse 4
81925 München
81925 München (DE)

   


(54) DEVICE AND METHOD FOR MONITORING SIGNAL DIRECTION IN AN OPTICAL COMMUNICATIONS NETWORK