Multi-wavelength source at ITU-T grid based on ultra-flattened dispersion photonic crystal fibers

Large Negative Flattened Dispersion over the S+C+L Band Using Highly Birefringent Photonic Crystal Fiber

Novel triangular lattice photonic crystal fiber with a very large negative flattened dispersion over the S+C+L band, and very high birefringence is offered here. To investigate different optical properties of the proposed fiber, finite element method (FEM) is deployed. The fiber presents a flattened negative dispersion of $-698.5\pm 5 ps/(nm-km)$ over the wavelength of $1440 nm$ to $1600 nm$. Besides, the proposed photonic crystal fiber (PCF) exhibits a high birefringence of $1.886\times10^{-2}$ at the wavelength of $1550 nm$. Furthermore, the nonlinearity, single modeness, effective area etc.…

Design and fabrication of an intrinsically gain flattened Erbium doped fiber amplifier

We report design and subsequent fabrication of an intrinsically gain flattened Erbium doped fiber amplifier (EDFA) based on a highly asymmetrical and concentric dual-core fiber, inner core of which was only partially doped. Phase-resonant optical coupling between the two cores was so tailored through optimization of its refractive index profile parameters that the longer wavelengths within the C-band experience relatively higher amplification compared to the shorter wavelengths thereby reducing the difference in the well-known tilt in the gains between the shorter and longer wavelength regions…

A New Design of Ultra-Flattened Near-zero Dispersion PCF Using Selectively Liquid Infiltration

The paper report new results of chromatic dispersion in Photonic Crystal Fibers (PCFs) through appropriate designing of index-guiding triangular-lattice structure devised, with a selective infiltration of only the first air-hole ring with index-matching liquid. Our proposed structure can be implemented for both ultra-low and ultra-flattened dispersion over a wide wavelength range. The dependence of dispersion parameter of the PCF on infiltrating liquid indices, hole-to-hole distance and air-hole diameter are investigated in details. The result establishes the design to yield a dispersion of 0+…

光纤法布里-珀罗谐振腔中切换波诱导的宽带克尔频率梳

Switching waves-induced broadband Kerr frequency comb in fiber Fabry-Perot resonators

本文提出在正常色散区光纤法布里-珀罗谐振腔中通过激发切换波产生宽带克尔频率梳，结合Lugiato-Lefever方程理论分析与全光纤实验，实现了跨越15 THz带宽的频率梳。

电信O波段中的细粒度全光纤非局域色散补偿

Fine-grained All-fiber Nonlocal Dispersion Compensation in the Telecommunications O-Band

本文通过细粒度时间关联测量，在符合ITU-T G.652D标准的城域光纤上实现了接近仪器分辨率的非局域色散补偿，验证了1km级光纤增量部署的可行性。