Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimal launch states for the measurement of principal modes in optical
  fibers   Modal dispersion characterization of multimode optical fibers can be
performed using the recently-proposed mode-dependent signal delay method. This
method consists of sending optical pulses using different combinations of modes
though the multimode optical fiber and measuring the mode group delay at the
fiber output. From these measurements, it is possible to estimate the modal
dispersion vector, the principal modes, and their corresponding differential
mode group delays. In this paper, we revise and extend the theoretical
framework of the mode-dependent signal delay method to include the impact of
receiver noise and mode-dependent loss. We compute optimal launch modes,
minimizing the noise error in the estimation of the fiber modal dispersion
vector. We show that, for a 40-mode fiber, the electronic signal-to-noise ratio
(SNR) is improved asymptotically by almost 6 dB compared to conventional mode
combinations.

20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg