Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical vector analysis with attometer resolution, 90-dB dynamic range
  and THz bandwidth   Optical vector analysis (OVA) having the capability to achieve magnitude and
phase responses is essential for fabrication and application of emerging
optical devices. However, the conventional OVA often have to make compromises
among resolution, dynamic range and bandwidth. Modulation-based OVA promises
ultra-high resolution but suffers from measurement errors due to the modulation
nonlinearity, narrow bandwidth restricted by the employment of microwave and
optoelectronic devices, and difficulties in measuring optical devices with deep
notch restricted by small signal modulation or the high-order sidebands. This
paper proposes an original method to meet the measurement requirements for
ultra-wide bandwidth, ultra-high resolution and ultra-large dynamic range
simultaneously, based on asymmetric optical probe signal generator (ASG) and
receiver (ASR). The use of the ASG and ASR not only doubles the measurement
range without spectral aliasing, but also removes the measurement errors
introduced by the modulation nonlinearity. The optimal signal modulation and
enormous sideband suppression ratio in the ASG enables an ultra-large dynamic
range. Thanks to the wavelength-independence of the ASG and ASR, the
measurement range can boost to 2N times by applying an N-tone optical frequency
comb (OFC) without complicated operation. In an experiment, OVA with a record
resolution of 334 Hz (2.67 attometer in the 1550-nm band), a dynamic range of
>90 dB and a measurement range of 1.025 THz is demonstrated.

11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph