Industry Long Period Fibre Gratings
1. Introduction In essence, a long period fibre grating (LPFG) is an all-fibre device with wavelength dependent loss. As a band rejection filter, all light in a spectral slice is discarded without affecting the
Industry Dual-Wavelength Differential Detection of Fiber Bragg Grating
We discuss how the dual-wavelength differential detection (DWDD) of fiber Bragg grating sensors can be used to build standardized high-resolution, high-accuracy, large-measurement
Industry Dual Wavelength Differential Detection of Fiber Bragg Grating Sensors
We show how dual wavelength differential detection can be used to measure fiber Bragg grating sensors using nanosecond pulses from a single DFB laser diode, by taking advantage of its dynamic chirp.
Industry Ultra-narrowband dual-cavity Bragg grating ring resonator optical
An optical filter utilizing a dual-cavity Bragg grating ring resonator is proposed to achieve narrowband transmission, high selectivity, and low inser
Industry Dual-wavelength fiber Bragg grating laser with independently
By incorporating an inline filter based on a polarization-diversified loop structure composed of two fiber Bragg gratings (FBGs) with different resonant wavelengths and three quarter
Industry Switchable dual-wavelength fiber laser based on a phase-shifted fiber
A switchable dual-wavelength erbium-doped fiber laser is proposed and demonstrated. It is based on the finer filter effect of phase-shifted fiber Bragg grating (PSFBG), combining with the
Industry Fiber Bragg Gratings
Fiber Bragg gratings are reflective structures in the core of an optical fiber with a periodic or aperiodic perturbation of the effective refractive index.
Industry Dual-wavelength fiber Bragg grating laser with independently
For example, their reflection spectra chosen by the inline filter can be linear horizontally polarized at one Bragg wavelength and linear vertically polarized at the other Bragg wavelength, and
Industry Ultranarrow dual-transmission-band fiber Bragg grating filter and its
A fiber Bragg grating filter with ultranarrow dual-transmission bands implemented using the equivalent phase shift technique is demonstrated. A fiber ring laser that incorporates a dual-transmission-band
Industry Tunable dual-wavelength fiber laser based on a single fiber Bragg
We propose a simple dual-wavelength Er-doped fiber laser configuration based on a dual-wavelength fiber Bragg grating written on the splice joint between two different fibers for wavelength
Industry High Performance Dual Polarization and Dual Wavelength
Abstract—We describe a novel and high performance dual polarization and dual wavelength band waveguide grating coupler which can be fabricated by deep UV photolithography.
Industry Dual-Band Polarization-Independent Subwavelength Grating Coupler
Surface grating couplers are diffractive periodic structures that enable efficient coupling of light between optical fibers and planar waveguides. Conventional grating couplers have polarization
Industry Optimization of Dual-Wavelength linear cavity Erbium-Doped fiber
There are few reports in the field of linear cavity dual-wavelength fiber lasers about the laser output characteristics when 3-dB fiber loop mirror (FLM) and Fiber Bragg grating (FBG) are
Industry Switchable dual-wavelength Erbium-doped fiber ring laser with
We have experimentally shown wavelength mode switching in a dual-wavelength Erbium-doped single cavity fiber laser where the initial two wavelengths of 1 nm spacing are determined by
Industry Tunable dual-wavelength fiber laser
A narrow-linewidth, tunable, dual-wavelength fiber laser operating at room temperature with each lasing wavelength in single-longitudinal-mode operation is demonstrated. A commercially
Industry Simultaneous discrimination of strain and temperature using dual
The temperature sensitivity coefficients of the dual-gratings are consistent due to the gratings are written in the same one fiber. Moreover, the strain sensitivity coefficients can be
Industry Wavelength conversion based on four-wave mixing in high-nonlinear
The dual-pump all-optical wavelength conversion based on a four-wave mixing (FWM) in a high-nonlinear dispersion shifted fiber (HNL-DSF) is demonstrated experimentally.
Industry Dual Wavelength Differential Detection of Fiber Bragg
We show how dual wavelength differential detection can be used to measure fiber Bragg grating sensors using nanosecond pulses from a single DFB
Industry Dual-Wavelength-Band Grating Coupler on 220-nm Silicon-on
We propose and design a novel dual-wavelength-band grating coupler on 220-nm-thick silicon-on-insulator and experimentally investigate its capability to couple two wavelength bands...
Industry High-resolution temperature monitoring with fiber Bragg gratings
In this paper, we report an FBG temperature sensor based on the dual-wavelength differential detection method. In this technique, the reflection intensities of two wavelength pulse
Industry Switchable and compact dual-wavelength random fiber laser based on
The single-dual-single wavelength switch by adjusting pump power. A switchable dual-wavelength random fiber laser (DW-RFL) with compact structure and a low-threshold is
Industry A spatially non-overlapping dual-wavelength 2D FBG for the
This work designed a dual-wavelength 2D fiber Bragg grating (FBG) engraved on the single-mode fiber to measure the temperature and strain. The FBG is composed of two sub-gratings
Industry Optimizing photonic device performance with tunable tilted dual-mode
Dual-mode tilted fiber Bragg gratings (TFBGs) have become pivotal in optical sensing applications due to their enhanced light coupling from the core fundamental mode to higher-order
Industry High-Efficiency Unidirectional Dual-Wavelength-Band Grating Coupler
A unidirectional dual-wavelength-band grating coupler with one-dimensional (1D) subwavelength structures is proposed and experimentally demonstrated.
Industry Fabrication of Dual-Wavelength Fiber Bragg Grating with
Abstract A method of fabricating dual-wavelength fiber Bragg grating with a uniform phase mask is demonstrated. Theoretical analysis and numerical simulation using Matrix method are given.
Industry Switchable dual-wavelength erbium-doped fiber laser based on the
In this paper, a switchable, dual-wavelength erbium-doped fiber laser, based on the broadband filtering performance of a tapered long-period fiber grating, is experimentally demonstrated.