Optical fiber doped with PbSe quantum spot and optical fiber amplifier thereof
A fiber amplifier and quantum dot technology, which is applied in the field of optical fiber doped with PbSe quantum dots, can solve the problems of restricting the intensity of spectral transitions, and achieve the effects of low noise, wide bandwidth, and high flat gain
Inactive Publication Date: 2008-06-25
ZHEJIANG UNIV OF TECH
View PDF0 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This non-uniform broadening constrains the intensity of the spectral transition, leading to a metamorphosis of the quantum dot lasing behavior, which is a major obstacle currently encountered by quantum dot lasers
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1～4
[0024] A semiconductor nanocrystal quantum dot optical fiber amplifier. The core of the optical fiber uses PbSe quantum dots of different particle sizes and numbers as the fiber dopant, and the doping concentration of each quantum dot is (1.0×10 21 ) / 3, and uniformly distributed in the fiber core; the nanocrystal quantum dot fiber amplifier includes: a pumping light source, an input fiber coupler, a quantum dot fiber, and an output fiber coupler, wherein the fiber length is 0.28 to 1.22 meters, The optical fiber has a core diameter of 8 μm, and in the ordinary optical fiber core SiO 2 doping in the material. Quantum dots are coated with quantum dots to maintain stability; at the pump wavelength λ p =980nm and pump power P p In the case of =300mW, Table 1 lists the parameters involved in the multi-grain size doping of Examples 1-4 and the performance of the corresponding optical fiber amplifier.
[0025] The diameter of doped quantum dots in the table has a size distributio...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
| wavelength | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a doping PbSe quantum dot optical fiber, in particular to a multi-granularity doping PbSe quantum dot optical fiber and a optical fiber communication amplifier thereof, wherein, the optical fiber comprises a fiber core and a cladding; the fiber core adopts semiconductor nano crystal PbSe quantum dot as dopant; the total concentration of the PbSe quantum dot is between 1 x 10<19> and 1 x 10<23>m<-3>; the dopant contains two to seven sorts of quantum dots with the particle diameter gradient difference value ranging between 0.5nm and 1.2nm; the particle diameter of the quantum dots ranges from 3nm to 9nm; the optical fiber amplifier comprises a pumping light source, an input optical fiber coupler, a doping PbSe quantum dot optical fiber and an output optical fiber coupler; moreover, the quantum dot optical fiber amplifier has the outstanding advantages of high flat gain, broad bandwidth and low noise, etc.
Description
1. Technical field [0001] The invention relates to an optical fiber doped with PbSe quantum dots, in particular to an optical fiber doped with PbSe quantum dots with multiple particle sizes and an optical fiber communication amplifier thereof. 2. Technical background [0002] In dense wavelength division multiplexing all-optical network communication, the optical fiber amplifier is a key device. Among various fiber amplifiers, fiber amplifiers doped with natural rare earth elements, especially erbium-doped fiber amplifiers (EDFA), have become popular due to their wide bandwidth, high gain, and low noise. Workhorse Fiber Amplifier. In order to increase the bandwidth and flat gain of EDFA, people added other elements (such as ytterbium, thulium, etc.) The EDFA achieved a fairly high level (bandwidth ~ 110nm, flat gain ~ 15dB, noise spectrum is ~ 4.5dB over the entire waveband). In addition, in recent years, as the Raman fiber amplifier with the widest bandwidth, there has b...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02G02F1/39G02B6/42
Inventor 程成
Owner ZHEJIANG UNIV OF TECH