High-signal-to-noise-ratio partially coherent light source based on super-continuum spectrum

• Main Authors: ZHAO DESHENG, WANG TIANSHU, MA WANZHUO, LIN PENG, SUN ZHIWEN, ZHANG XINMENG, LIU RUNMIN, LIU ZHI, CHEN JUNDA, BAO JIANRONG, CHEN PEIDI, SONG GUANGBIN, JIANG ZIQI
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2020
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DEVICES USING STIMULATED EMISSION; ELECTRICITY; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The invention discloses a high-signal-to-noise-ratio partially coherent light source generated based on a super-continuum spectrum and belongs to the technical field of optical fiber light sources andaims to solve problems in the prior art. A first pumping source is connected with a polarization controller; the light of the polarization controller and an arbitrary waveform generator are connectedwith a Mach-Zehnder modulator; the Mach-Zehnder modulator is connected with an erbium-doped fiber amplifier; the light of the erbium-doped fiber amplifier is connected with the light of an isolator;the light of the isolator is connected with the light of a tunable optical attenuator; the light of the tunable optical attenuator is connected with the light of a standard single-mode optical fiber;the light of the standard single-mode optical fiber is connected with a port A of a wavelength division multiplexer; a second pumping source light is connected with a port B of the wavelength divisionmultiplexer; a port C of the