Tunable optical frequency comb generation system based on single-chip integrated microcavity laser

• Main Authors: ZOU LINGXIU, WENG HAIZHONG, XIAO JINLONG, YANG YUEDE, HUANG YONGZHEN, MA XIUWEN, XIAO ZHIXIONG
• Format: Patent
• Language: English
• Published: 08.07.2015
• 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 tunable optical frequency comb generation system based on a single-chip integrated microcavity laser. The system is that a main laser and a secondary laser are integrated to the same functional module, wherein the main laser is used for providing a tunable injected light signal to the laser; a tunable light filter is used for performing tunable filtering for light signals inputted by the main laser and the secondary laser; an optical fiber amplifier is used for amplifying the light signals so as to achieve the power for a high-nonlinearity optical fiber to work; an opto-isolator is used for ensuring the single-way output of the light outputted by the optical fiber amplifier to the high-nonlinearity optical fiber; the high-non-linearity optical fiber is used for providing a nonlinearity medium and expanding cascade four-wave mixing so as to obtain the optical frequency comb with equal frequency intervals and uniform power distribution. According to the system, the spectrum spreading effect of the high-nonlinearity optical fiber is utilized to generate the optical frequency comb with uniform mode intervals; the opposite position of the inputted wavelength is changed to achieve continuous tuning of frequency comb intervals; the frequency comb intervals cover wave bands at ultrahigh frequency centimeter wave of 3 to 30GHz and extremely high frequency millimeter wave of 30 to 300GHz.