Optical communications – Diagnostic testing
Reexamination Certificate
2007-03-06
2007-03-06
Sedighian, M. R. (Department: 2613)
Optical communications
Diagnostic testing
C398S025000, C398S031000, C356S073100
Reexamination Certificate
active
10538768
ABSTRACT:
An instrument for measuring bidirectional optical signals propagating in an optical transmission path between elements one of which will not transmit if continuity of the transmission path is not maintained, for example a branch path between a central offices optical line terminal (OLT) and an end-user's optical network terminal (ONT), comprises first and second connector receptacles for connecting the instrument into the path, a 2×2 coupler (32) having first and second ports (28, 30) connected to the first and second connectors (22, 24), respectively, for completing the optical transmission path, a third port (36) for, outputting a portion of each optical signal received via the first port (28) and a fourth port (34) for outputting a portion of each optical signal received via the second port (30) Detectors (38, 42, 44) coupled to the third and fourth ports convert the optical signal portions into corresponding electrical signals, which are processed to provide the desired measurements. The measurement results may be displayed by a suitable display unit (60) Where the ÖLT transmits signals at two different wavelengths, the instrument may separate parts of the corresponding optical signal portion according to wavelength and process them separately.
REFERENCES:
patent: 5535038 (1996-07-01), Hinch
patent: 5696707 (1997-12-01), Hentschel et al.
patent: 6188509 (2001-02-01), Lee et al.
patent: 6600594 (2003-07-01), Ko et al.
patent: WO 99/67609 (1999-12-01), None
Adams Thomas
EXFO Electro-Optical Engineering Inc.
Sedighian M. R.
LandOfFree
Method and apparatus for testing optical networks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for testing optical networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for testing optical networks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3756453