Optics: measuring and testing – Plural test
Reexamination Certificate
2005-08-02
2005-08-02
Chowdhury, Tarifur R. (Department: 2871)
Optics: measuring and testing
Plural test
C356S073100
Reexamination Certificate
active
06924890
ABSTRACT:
In a method for measuring relevant parameters of individual fibers of single-mode and multimode fibers of glass- or plastic-fiber cables, measuring radiation is reflected at the end of the test fiber to the fiber input by a mirror, particularly a Schmidt mirror having very high reflectivity (>99%), the measurement being carried out at the coupling-in site by a combined transmitting and receiving device. The Schmidt mirror is connected to the test fiber via a so-called fiber connector. The highly reflective mirror coating is applied to the end face of a given connector, so that the Schmidt connector provided with the mirror coating is connected to the test fiber either directly or via a short glass-fiber cable piece terminated with a standard connector and with the Schmidt mirror connector. With the use of a glass-fiber cable piece thus terminated the Schmidt mirror connector remains untouched and is protected.
REFERENCES:
patent: 4289398 (1981-09-01), Robichaud
patent: 4576452 (1986-03-01), Abel et al.
patent: 4634274 (1987-01-01), Shen et al.
patent: 4737026 (1988-04-01), Dalgoutte et al.
patent: 4838690 (1989-06-01), Buckland et al.
patent: 4883954 (1989-11-01), Esser et al.
patent: 5130535 (1992-07-01), Kummer et al.
patent: 5189483 (1993-02-01), Inagaki
patent: 5251001 (1993-10-01), Dave et al.
patent: 5319483 (1994-06-01), Krasinski et al.
patent: 5347601 (1994-09-01), Ade et al.
patent: 5689331 (1997-11-01), Staver
patent: 5735927 (1998-04-01), Sanghera et al.
patent: 5825479 (1998-10-01), Thompson et al.
patent: 5956131 (1999-09-01), Mamyshev et al.
patent: 6080148 (2000-06-01), Damasco et al.
patent: 6233100 (2001-05-01), Chen et al.
patent: 6271922 (2001-08-01), Bulow et al.
patent: 6400450 (2002-06-01), Golowich et al.
patent: 6415076 (2002-07-01), DeCusatis
patent: 0 548 935 (1993-06-01), None
patent: 0 619 657 (1994-10-01), None
patent: 58 100733 (1983-06-01), None
H. Gruhl et al., “Characterization of 11000 km of installed standard monomode fibre and statustical analysis in view of network design,” Core and ATM Networks NOC '97′, pp. 59-64.
J. Vobian, “PMD Measurements in the time and frequency domains on Telecom links within the framework of the ACTS projects ‘Upgrade’and ‘Photon’”, Proc. OFMC 97, Teddington (1997).
J. Vobian, “Long-Distance Field Measurements of Spectral Chromatic Dispersion,” J. Opt. Commun., Dec. 1985, vol. 6, No. 4, pp. 137-141.
Herchenroeder Georg
Moerl Klaus
Vobian Joachim
Deutsche Telekom AG
Kim Richard
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