Photoelectric sampler based on electro-optical modulation
An optoelectronic sampling and electro-optical modulation technology, applied in the field of optoelectronic information, can solve the problems of complex structure, high noise, weak anti-interference ability, etc., and achieve the effects of easy implementation, elimination of phase delay and low cost
Inactive Publication Date: 2015-03-25
HANGZHOU DIANZI UNIV
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Problems solved by technology
At present, methods such as acousto-optic modulation are commonly used. The existing methods have defects such as slow transmission speed, weak anti-interference ability, poor confidentiality, complex structure, high cost, and large noise.
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[0023] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0024] Such as figure 1 As shown, the photoelectric sampler based on electro-optic modulation includes a clock signal 1, a first lens 2, a polarizer 3, an electro-optic crystal 4, a quarter-wave plate 5, a bandpass filter 6, an analyzer 7, and a second lens 8. The photodetector 9, the input sampling clock signal rate is 20Gbit / s, the signal wavelength is 1550nm, and the signal voltage range applied to the electro-optic crystal is 0-10V.
[0025] The input clock signal source passes through the first lens 2 a 1 end (input end) incident, by the a of the first lens 2 2 end (output end) emits from a of the first lens 2 2 The light coming out of the end passes through the b of the polarizer 3 1 end (input end) incident, by the b of the polarizer 3 2 terminal (output terminal) emitted from the b of the polarizer 3 2 The light coming out o...
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Abstract
The invention discloses a photoelectric sampler based on electro-optical modulation. The photoelectric sampler comprises a clock signal source, wherein the input clock signal source shoots in through the a1 end of a first lens and shoots out through the a2 end of the first lens, light shooting out of the a2 end of the first lens shoots in through the b1 end of a polarizer and shoots out through the b2 end of the polarizer, light shooting out of the b2 end of the polarizer shoots in through the c1 end of an electro-optical crystal and shoots out through the c2 end of the electro-optical crystal, light shooting out of the c2 end of the electro-optical crystal shoots in through the d1 end of a quarter-wave plate and shoots out through the d2 end of the quarter-wave plate, light shooting out of the d2 end of the quarter-wave plate shoots in through the e1 end of a band-pass filter and shoots out through the e2 end of the band-pass filter, light shooting out of the e2 end of the band-pass filter shoots in through the f1 end of an analyzer and shoots out through the f2 end of the analyzer, and light shooting out of the f2 end of the analyzer shoots in through the g1 end of a second lens, shoots out through the g2 end of the second lens and finally enters a photodetector.
Description
technical field [0001] The invention belongs to the technical field of optoelectronic information, and in particular relates to a photoelectric sampler based on electro-optic modulation. Background technique [0002] With the rapid development of optoelectronic technology, photoelectric sampling is increasingly used in the field of optical communication technology. [0003] Modulation is an important link in the photoelectric system. The purpose of modulation is to transform the signal to be processed or the information to be transmitted in some form, so as to facilitate processing, transmission and detection. At present, methods such as acousto-optic modulation are commonly used. The existing methods have defects such as slow transmission speed, weak anti-interference ability, poor confidentiality, complex structure, high cost, and large noise. Contents of the invention [0004] Aiming at the shortcomings of the existing electric field sampling, the invention provides a ...
Claims
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IPC IPC(8): G02F1/03
CPCG02F1/0311
Inventor 李齐良陈心宋俊峰李舒琴胡淼魏一振周雪芳卢旸
Owner HANGZHOU DIANZI UNIV