This work was supported by Great Scientific Research Project ofZhejiang Province, China (No.021101558);a part of projectfunds of the Korea-China Optical Technology Research Center.
An S band and a C band distributed fiber Raman amplifiers (DFRAs) with flattened gain and compensated dispersion have been studied and implemented with 1427 nm and 1455 nm mono-wavelength fiber Raman lasers as the pum...
This work is supported by the Innovation Foundation of ChinaAerospace Science and Technology (No. 021390-068)
A novel temperature-insensitive strain sensor based on bandwidth demodulation of the reflected light from the tapered fiber grating is presented, which is simple and low-cost and has considerable potential particularl...
This work is supported by the National Basic Research Program ofChina (2003CB314906);the Key grant Project of Chinese Minis-try of Education (NO.104046).
A dispersion-flattened photonic crystal fiber with normal dispersion is designed for generating flat wideband supercontanuum, and the supercontinuum generation in this fiber is numerically analyzed. The results show t...
A novel structure for efficient side-coupling of high power double-cladding fiber lasers is presented. The maximum cou- pling efficiency of this structure is more than 90% for TM-polarization in the +1 and -1 order bu...
This paper describes our research activity involved in the identification, development and test of a prototype SHM system constituted by optical sensing nodes to measure both temperature and strain on ultra high tempe...
Supported by China Scholarship Council, Natural Science Foun-dation of China (grant no.NSFC 60677027);Natural Science Foun-dation of Shandong Province of China (grant no.Y2006G08);Foundation for Doctoral Research of Shandong Academy of Sci-ence (grant no.2005-79).
A new fiber optic hydrophone is described. based on a distributed feedback fiber laser (DFB-fiber laser) Experimental arrangement consists of DFB-FL, unbalanced Mach-Zehnder interferometer, piezoelectric (PZT) modulat...
Based on the Stokes signals of the spontaneous Raman backscattering,a demodulated method for the simultaneous distributed temperature measurement in an optical fiber is presented to improve the sensitivity of the sens...
We propose a silica-core dispersion-decreasing Bragg fiber (DDBF) of mode effective area as large as 55 μm^2 for supercontinuum (SO) generation at the pump wavelength of 1060 nm. Using a fast and simple matrix me...
Semiconductor optical amplifiers (SOA) are optical amplifying devices and key parts in optical switches and optical buffers.They are largely used in communication system.Linewidth enhancement factor is an important pa...
Supported by State"10-5"Project :"40 Gb/s SDH(STM-256)Optical Fiber Communications Equipments and Systems"( No.2002BA106B07-5)
In this letter,a new polarization state generator(PSG) is presented,which can generate an output with arbitrary state of polarization(SOP).This PSG consists of a linear polarizer,a rotatable quarter-waveplate,and a ro...