Authors:
Felipe Calliari
1
;
Luis E. Y. Herrera
1
;
Jean Pierre von der Weid
1
and
Gustavo C. Amaral
2
Affiliations:
1
Pontifical Catholic University of Rio de Janeiro, Brazil
;
2
Pontifical Catholic University of Rio de Janeiro, Institute for Quantum Information Science and University of Calgary, Brazil
Keyword(s):
Photon-Counting OTDR, Signal Processing, FPGA.
Related
Ontology
Subjects/Areas/Topics:
Optical Communications and Networking
;
Optics
;
Photonics, Optics and Laser Technology
;
Spectroscopy, Imaging and Metrology
Abstract:
In this work, the development of a hybrid structure for the monitoring of optical fibers, using two types of
Photon Counting Optical Time Domain Reflectometers (n-OTDR), is presented. While one n-OTDR presents
a 32 dB dynamic range with spatial resolution of 6 m and minute-range measurements, the other has a 14 dB
dynamic range and a resolution of 3 cm with hour-range measurements. By employing a trend filter capable
of detecting fiber faults in the n-OTDR fiber profile and interchanging between either OTDR techniques in an
automatic fashion, we were able to harness the qualities of both in the minimum amount of measurement time.
Our experimental results performed with multiple optical fiber links attest the structure’s capability of automatically
detecting faults in an optical fiber link with ultra-high-resolution and minute-range measurements.
Furthermore, tunability of the hybrid structure enabling the monitoring of wavelength-division multiplexed
optical networks has been demonst
rated.
(More)