Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photon Counting OTDR : Advantages and Limitations   We give detailed insight into photon counting OTDR (nu-OTDR) operation,
ranging from Geiger mode operation of avalanche photodiodes (APD), analysis of
different APD bias schemes, to the discussion of OTDR perspectives. Our results
demonstrate that an InGaAs/InP APD based nu-OTDR has the potential of
outperforming the dynamic range of a conventional state-of-the-art OTDR by 10
dB as well as the 2-point resolution by a factor of 20. Considering the trace
acquisition speed of nu-OTDRs, we find that a combination of rapid gating for
high photon flux and free running mode for low photon flux is the most
efficient solution. Concerning dead zones, our results are less promising.
Without additional measures, e.g. an optical shutter, the photon counting
approach is not competitive.

22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga