Based on the semiconductor optical amplifiers (SOAs) which have the advantages of the fast response speed, good stability, easy to integrate and insensitive polarization, a novel harmonic mode-locked fiber ring laser based on SOA has been presented in this paper.
The maximum output power is 0.6mW and output wavelength is 155.26nm when the laser is pumped by 980mnm semiconductor laser. The output power of fiber ring laser influenced by difference split ratio of output couplers or different length of Er-doped fiber is discussed.
The novel zero-path-difference interferometer,of which the annular fiber arm of Sagnac interferometer is converted into linear structure by using a Faraday rotator mirror(FRM),can overcome the shortcoming of traditional optical fiber Sagnac interferometer.
We report lor the first time to our best knowledge, the arbitrary numerator rational harmonic mode-locked phenomenon in a ring fiber laser firstly,and we report and analyze the arbitrary numerator rational harmonic mode-locked phenomenon in detail in actively mode-locked fiber laser experimentation.
Different schemes of fiber ring interferometers (FRIs) with a broadband nonmonochromatic radiation source manufactured on the basis of air-silica microstructured single-mode optical fibers (SMOFs) are considered.
Effect of polarization nonreciprocity in rotating fiber ring interferometers
Temperature dependences of the zero drift in a fiber ring interferometer (FRI) without a polarizer in the presence of random inhomogeneities in a single-mode optical fiber in the FRI loop are obtained by numerical simulation.
Some additional conditions of applicability of the ergodic hypothesis to fiber ring interferometers (FRIs) with a loop consisting of a single-mode optical fiber (SMOF) with random inhomogeneities are considered.
This allows the derivation of analytical expressions for the degree of polarization of nonmonochromatic radiation in an SMOF and for the zero drift in fiber ring interferometers with the help of the approximate method of small perturbations.
Peripheral focal low signal intensity regions consisted of disorganized compact annular fibers, tiny fissures, and dense fibrosis.
These structures are distinct from the annular fibers detected by histochemical methods.
There were no differences existing in annular fibers anchoring on the endplate between discs of different levels.
The annulus of the disc was modeled with annular fibers embedded in a matrix.
In this paper a complete small signal analysis for semiconductor laser frequency chirping in the presence of optical fiber ring feedback is presented. It shows that the chirp-to-power ratio (CPR) strongly dependents on the optical coupling and the phase detuning especially when modulation frequency is below gigahertz.