Tunable light-frequency comb based on dual-mode square micro-cavity laser

• Main Authors: ZOU LINGXIU, XIAO JINLONG, YANG YUEDE, HUANG YONGZHEN, LONG HENG, MA XIUWEN
• Format: Patent
• Language: English
• Published: 08.07.2015
• Subjects: 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; 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 light-frequency comb based on a dual-mode square micro-cavity laser. The tunable light-frequency comb comprises the dual-mode square micro-cavity laser used for generating dual-mode lasers with adjustable spacing, an optical fiber amplifier used for amplifying an optical signal, and a high non-linear optical fiber for broadening cascaded four-wave mixing effect, thereby obtaining the light-frequency comb. The dual-mode square micro-cavity laser comprises a substrate, a square micro-cavity, an output waveguide, an electricity injection window and p-type and n-type electrodes; the electricity injection window is formed in the top of the square micro-cavity; and a non-injection area is covered by a medium layer. The realization scheme of the dual-mode square micro-cavity laser with adjustable spacing is simple in structure; the tunable light-frequency comb with stable frequency intervals is obtained by broadening of the cascaded four-wave mixing effect in the non-linear optical fiber based on the laser.