Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Silicon Optical Transistor   A fundamental road block for all-optical information processing is the
difficulty in realizing a silicon optical transistor with the ability to
provide optical gain, input output isolation and buffer action. In this work,
we demonstrate an all-optical transistor using optical nonlinearity in
microrings. By using weak light to control strong light, we observed an On/Off
ratio up to 20 dB. It can compensate losses in other optical devices and
provide fan-out capability. The device is ultra compact and is compatible with
current complementary metal-oxide-semiconductor (CMOS) processing.

7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex