公开(公告)号：US09086609B1

公开(公告)日：2015-07-21

申请号：US13869730

申请日：2013-04-24

Applicant: University of Southern California

Inventor： Yan Yan ,  Lin Zhang ,  Alan E. Willner

IPC: G02F1/39

CPC classification number: G02F1/395 ,  G02F1/39

Abstract: Nondegenerate mirrorless four-wave mixing oscillation with frequency tunability is proposed in nonlinear waveguide of the third-order nonlinearity such as silicon waveguide) by using two different spatial modes. As low as ˜2 W threshold power is obtained in several centimeters long waveguide. In one aspect, a method includes propagating a first wave along an axis of a multimode waveguide in a forward direction, the first optical wave having a first frequency; propagating a second wave along the axis of the multimode waveguide in a backward direction, the second wave having a second frequency; the waveguide configured to support multiple modes, including at least a fundamental mode and a second mode; and the propagating the first wave occurs at a same time as the propagating the second wave to generate a third wave in the forward direction having a third frequency and fourth wave in the backward direction having a fourth frequency.

Abstract translation: 通过使用两种不同的空间模式，在三阶非线性的非线性波导（例如硅波导）中提出了具有频率可调性的非简并无反射四波混频振荡。 低至〜2W的阈值功率在几厘米长的波导中获得。 一方面，一种方法包括沿着正向的多模波导的轴线传播第一波，第一光波具有第一频率; 沿着多模波导的轴向后传播第二波，第二波具有第二频率; 所述波导被配置为支持多个模式，包括至少基本模式和第二模式; 并且传播第一波在与传播第二波的同时发生，以产生具有第四频率的具有第三频率和第四波的向前方向上的第三波。

公开(公告)号：US09110219B1

公开(公告)日：2015-08-18

申请号：US13740137

申请日：2013-01-11

Applicant: University of Southern California

Inventor： Lin Zhang ,  Yan Yan ,  Yang Yue ,  Alan E. Willner

IPC: G02B6/02 ,  G02B6/10 ,  G01N21/25 ,  G01J1/04

CPC classification number: G01J1/0425 ,  G01J3/0259 ,  G01J3/10 ,  G01J9/00 ,  G01J11/00 ,  G02B6/12007 ,  G02B6/122 ,  G02B6/1223 ,  G02F2001/3528

Abstract: Devices and systems which include on-chip waveguides with flattened dispersion are described. In one aspect, silicon nitride slot waveguides that exhibit four zero-dispersion wavelengths with a flattened dispersion over a wavelength range of 500 nm are obtained. The disclosed silicon nitride slot waveguides are used to generate a two-octave supercontinuum from 630 nm to 2650 nm, enabling (a) on-chip generation of 5 fs optical pulses as short as 1.3 cycles, and (b) sensitive single-shot measurements of the absolute carrier-envelope phase using a single integrated waveguide. In another aspect, silicon slot waveguides that exhibits four zero-dispersion wavelengths with a flattened dispersion over a wavelength range of 670-nm are obtained. An octave-spanning supercontinuum is generated in the disclosed silicon slot waveguide, over a wavelength range from 1217 nm to 2451 nm, approximately from bandgap wavelength to half-bandgap wavelength. Input pulses longer that 100 fs can be compressed to 10 fs using the disclosed silicon slot waveguide.

Abstract translation: 描述了包括具有扁平分散体的片上波导的装置和系统。 在一个方面，获得了在500nm波长范围内具有扁平色散的四个零色散波长的氮化硅槽波导。 公开的氮化硅槽波导用于产生从630nm到2650nm的双倍频程超连续谱，使得能够（a）片上产生短达1.3个周期的5fs光脉冲，以及（b）敏感的单次测量 的绝对载波包络相位使用单个集成波导。 在另一方面，获得了在670nm波长范围内具有扁平色散的四个零色散波长的硅槽波导。 在公开的硅槽波导中，在1217nm至2451nm的波长范围内，大致从带隙波长到半带隙波长，产生了一个倍频程跨越超连续谱。 使用所公开的硅槽波导，输入脉冲的长度可以将100fs压缩到10fs。