![Highly efficient all-fiber tunable polarization filter](http://s1.studyres.com/store/data/007928256_1-a60d2ccdc56c29ef35c4b7b9b98e31b0-300x300.png)
Highly efficient all-fiber tunable polarization filter
... coupling efficiency between two polarization modes demonstrated so far were only 6% and 12% [7, 8], which is too small for practical applications and therefore it has not been seriously pursued. In this paper, we demonstrate, for the first time to our knowledge, that a full coupling can be achieved ...
... coupling efficiency between two polarization modes demonstrated so far were only 6% and 12% [7, 8], which is too small for practical applications and therefore it has not been seriously pursued. In this paper, we demonstrate, for the first time to our knowledge, that a full coupling can be achieved ...
PCF Based Sensor with High Sensitivity, High
... nonlinear effects [8] can be achieved for wide wavelength ranges. These unique light properties of PCFs have contributed to further development of these structures in various applications in the fields of optical communications [7], nonlinear optics [8], high power technology [13] and sensing [1–5]. ...
... nonlinear effects [8] can be achieved for wide wavelength ranges. These unique light properties of PCFs have contributed to further development of these structures in various applications in the fields of optical communications [7], nonlinear optics [8], high power technology [13] and sensing [1–5]. ...
Molecular beam epitaxy of periodic BaF2 /PbEuSe layers on Si„111…
... Weber 3D growth mode while for BaF2 on PbEuSe the growth proceeds via a 2D Frank–van-der-Merwe growth mode from the very beginning. Broad bandwidth ~;3 mm! reflectors with reflectivity of 95% at a center wavelength of 4.0 mm for normally incident light have been obtained with three BaF2 /PbEuSe stac ...
... Weber 3D growth mode while for BaF2 on PbEuSe the growth proceeds via a 2D Frank–van-der-Merwe growth mode from the very beginning. Broad bandwidth ~;3 mm! reflectors with reflectivity of 95% at a center wavelength of 4.0 mm for normally incident light have been obtained with three BaF2 /PbEuSe stac ...
DFB Quantum Cascade Laser Arrays The Harvard community has
... been to develop a broadly tunable single-mode QCL source that combines the advantages of external cavity and DFB devices. Our device is based on an array of DFB-QCLs, monolithically integrated on the same chip, as outlined in our previous work [11]. We fabricated several arrays of 32 lasers on a sin ...
... been to develop a broadly tunable single-mode QCL source that combines the advantages of external cavity and DFB devices. Our device is based on an array of DFB-QCLs, monolithically integrated on the same chip, as outlined in our previous work [11]. We fabricated several arrays of 32 lasers on a sin ...
Theoretical and empirical comparison of coupling coefficient and
... the cladding structure and typical values are in the range of 0.1 to 2 mm-1 for core spacing in the range 4 to 15μm [7]. It also shows a strong decrease when the fiber core spacing increases, as expected from Equation (5) by assuming that the interaction length is negligible as compared to the radiu ...
... the cladding structure and typical values are in the range of 0.1 to 2 mm-1 for core spacing in the range 4 to 15μm [7]. It also shows a strong decrease when the fiber core spacing increases, as expected from Equation (5) by assuming that the interaction length is negligible as compared to the radiu ...
Role of dispersion in pulse emission from a sliding
... Figures 3– 8 illustrate the dependence p of the pulse width r, the spectral bandwidth j s 1 1 n 2yrd, and the amplitude A of the solitary-wave solution [Eqs. (3) and (4)] on the dispersion coefficient D. In Figs. 3 – 5 the linear excess gain d . 0, whereas in Figs. 6 – 8 d , 0. In Figs. 3 – 5 we se ...
... Figures 3– 8 illustrate the dependence p of the pulse width r, the spectral bandwidth j s 1 1 n 2yrd, and the amplitude A of the solitary-wave solution [Eqs. (3) and (4)] on the dispersion coefficient D. In Figs. 3 – 5 the linear excess gain d . 0, whereas in Figs. 6 – 8 d , 0. In Figs. 3 – 5 we se ...
sensors Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy
... An alternative approach to mirror-based CRD detection for condensed phase absorption and refractive index measurements was developed by our group and others since 2002. In fiber-cavity ring-down spectroscopy the optical cavity consists of a strand of single-mode or multi-mode fiber optic cable. The ...
... An alternative approach to mirror-based CRD detection for condensed phase absorption and refractive index measurements was developed by our group and others since 2002. In fiber-cavity ring-down spectroscopy the optical cavity consists of a strand of single-mode or multi-mode fiber optic cable. The ...
design and analysis of variable gain amplifier with
... turn fuelled the developed of high power, wide bandwidth, low noise, gain flattened optical amplifiers. The important issues related to the amplifier performance, namely the optical noise figure and bandwidth to increase the Gain. Optical system can achieve much higher data rates than electronic sys ...
... turn fuelled the developed of high power, wide bandwidth, low noise, gain flattened optical amplifiers. The important issues related to the amplifier performance, namely the optical noise figure and bandwidth to increase the Gain. Optical system can achieve much higher data rates than electronic sys ...
3 Introduction to Add
... coupler splits light launched into port 1 and a specific wavelength, λG, is reflected by the two identical gratings. These reflected signals interfere in the 3dB coupler in such a way that the signal is dropped and the back-reflected light intensity arriving at port1 is zero, providing the coupler i ...
... coupler splits light launched into port 1 and a specific wavelength, λG, is reflected by the two identical gratings. These reflected signals interfere in the 3dB coupler in such a way that the signal is dropped and the back-reflected light intensity arriving at port1 is zero, providing the coupler i ...
Color-changing and color-tunable photonic bandgap fiber textiles
... light from such fibers is quite complex. The fibers appear colored due to optical interference effects in the microstructured region of a fiber. By varying the size and position of the fiber structural elements one can, in principle, design fibers of unlimited unique appearances. Thus, starting with ...
... light from such fibers is quite complex. The fibers appear colored due to optical interference effects in the microstructured region of a fiber. By varying the size and position of the fiber structural elements one can, in principle, design fibers of unlimited unique appearances. Thus, starting with ...
Bistable localized emission states in a 200 μm broad
... chosen, at locations away from the nearto the detection part, and also to allow the field boundaries and defect lines. The injected field to enter the cavity. VCSEL was biased to be within the bistability range of these two spots. Figure 2 displays near-field intensity distributions during the exper ...
... chosen, at locations away from the nearto the detection part, and also to allow the field boundaries and defect lines. The injected field to enter the cavity. VCSEL was biased to be within the bistability range of these two spots. Figure 2 displays near-field intensity distributions during the exper ...
Dispersion Compensating Fiber Module
... ber can be spliced with low loss to both SC-DCF and SSMF, thus reducing the splice loss. In this case, SCDCF module needs four points of arc fusion splice. Table 3 shows the optical properties of fabricated SC-DCF modules. The insertion loss of module No. 5 is 3.7 dB at the wavelength of 1550 nm, wh ...
... ber can be spliced with low loss to both SC-DCF and SSMF, thus reducing the splice loss. In this case, SCDCF module needs four points of arc fusion splice. Table 3 shows the optical properties of fabricated SC-DCF modules. The insertion loss of module No. 5 is 3.7 dB at the wavelength of 1550 nm, wh ...
Application of Digital Phase-shift Shadow Moiré to Micro
... reference grating T(x) from Equation (15). This is in fact the most simplified solution, because there is no z-dependence in the expression for the virtual reference grating. 4) the general solution of the system of equations (14) yields a last out-of-plane displacement profile for the object surfac ...
... reference grating T(x) from Equation (15). This is in fact the most simplified solution, because there is no z-dependence in the expression for the virtual reference grating. 4) the general solution of the system of equations (14) yields a last out-of-plane displacement profile for the object surfac ...
Coupling Ratio and Power Transmission to Core and Cladding
... region. V is derived from radius, wavelength and refractive index parameters. Parametric variations are performed on the left and right hand side of the coupling region. At the center of the coupling region V is assumed constant. A partial power is modeled and derived using V, normalized lateral pha ...
... region. V is derived from radius, wavelength and refractive index parameters. Parametric variations are performed on the left and right hand side of the coupling region. At the center of the coupling region V is assumed constant. A partial power is modeled and derived using V, normalized lateral pha ...
Needle-based reflection refractometry of scattering samples using
... to the sample arm of a low-coherence interferometer. This configuration enables coherencegated reflectometry measurement of scattering samples at the probe-sample interface. 3. Materials and methods The measurement device is a fiber-optic needle probe [22] connected to an LCI detection system consis ...
... to the sample arm of a low-coherence interferometer. This configuration enables coherencegated reflectometry measurement of scattering samples at the probe-sample interface. 3. Materials and methods The measurement device is a fiber-optic needle probe [22] connected to an LCI detection system consis ...
Survey: Installed Optical Fiber Cabling Distances
... Intrabuilding Backbone cable - Backbone cable within buildings. Intrabuilding Backbone cable distance is the cable distance between telecommunication closets and the equipment room as illustrated in Figure 1. Intrabuilding Backbone cable does not include patch cord, jumper, or equipment cable. For H ...
... Intrabuilding Backbone cable - Backbone cable within buildings. Intrabuilding Backbone cable distance is the cable distance between telecommunication closets and the equipment room as illustrated in Figure 1. Intrabuilding Backbone cable does not include patch cord, jumper, or equipment cable. For H ...
paper__final
... Optical fiber loss is one of the most important factors that limiting the transmission distance in optical communication systems (Çokrak et al. 2004). In order to transmit signals over long distances, it is necessary to compensate the attenuation losses within the fiber. The main advantage of optica ...
... Optical fiber loss is one of the most important factors that limiting the transmission distance in optical communication systems (Çokrak et al. 2004). In order to transmit signals over long distances, it is necessary to compensate the attenuation losses within the fiber. The main advantage of optica ...
A Review on Non linearity in optical fiber due to
... nonlinear dependence of the refractive index on intensity. At 50 Gb/s data rates the modulation bandwidth is so large, that even for an ideal source without phase noise, fiber dispersion broadens the optical pulses and limits transmission. The deadly influence of linear fiber dispersion may be minim ...
... nonlinear dependence of the refractive index on intensity. At 50 Gb/s data rates the modulation bandwidth is so large, that even for an ideal source without phase noise, fiber dispersion broadens the optical pulses and limits transmission. The deadly influence of linear fiber dispersion may be minim ...
A minimally invasive in-fibre Bragg grating sensor
... by the material properties of the fibre, the duration of exposure to ultraviolet light and the ...
... by the material properties of the fibre, the duration of exposure to ultraviolet light and the ...
Optical amplifiers
... optical signal is injected into this fiber, along with the light from a special “pump” laser that is designed to excite the erbium ions. Let us think of regular optical fiber as a sensible and studious college student who drinks only mineral water. We can then consider an erbium-doped fiber a beer-s ...
... optical signal is injected into this fiber, along with the light from a special “pump” laser that is designed to excite the erbium ions. Let us think of regular optical fiber as a sensible and studious college student who drinks only mineral water. We can then consider an erbium-doped fiber a beer-s ...
Aalborg Universitet Transfer function and near-field detection of evanescent waves
... different tip apex angles. The detection roll-off for high spatial frequencies observed in the experiment and obtained during the simulations is fitted using a simple expression for the transfer function, which is derived by introducing an effective point of (dipolelike) detection inside the probe t ...
... different tip apex angles. The detection roll-off for high spatial frequencies observed in the experiment and obtained during the simulations is fitted using a simple expression for the transfer function, which is derived by introducing an effective point of (dipolelike) detection inside the probe t ...
PowerPoint 簡報
... security of one optical system have become a critical issue. The development of optical CDMA (OCDMA) technique is such attractive since it is possible that allows multiple users in a local area network (LAN) environment to access the same fiber channel asynchronously at all times. Besides, CDMA ...
... security of one optical system have become a critical issue. The development of optical CDMA (OCDMA) technique is such attractive since it is possible that allows multiple users in a local area network (LAN) environment to access the same fiber channel asynchronously at all times. Besides, CDMA ...
I41035057
... combination of low noise and high gain of EDFA. M. M. Ismail et. al. [5] discussed simulation of WDM optical network in terms of length and pump power and found gain flattened from 1546 nm to 1558 nm band of wavelength with noise figure less than 9 dB for 16-channels simultaneous amplification in a ...
... combination of low noise and high gain of EDFA. M. M. Ismail et. al. [5] discussed simulation of WDM optical network in terms of length and pump power and found gain flattened from 1546 nm to 1558 nm band of wavelength with noise figure less than 9 dB for 16-channels simultaneous amplification in a ...
tuning
... is, even if any enduser use any interconnect components produced by any manufacturers, it could be connected for fiber core to match each other and it will be helped for minimized optical performance. This process call “TUNING”. In a tuned plug, the angular segment into which core eccentricities are ...
... is, even if any enduser use any interconnect components produced by any manufacturers, it could be connected for fiber core to match each other and it will be helped for minimized optical performance. This process call “TUNING”. In a tuned plug, the angular segment into which core eccentricities are ...
Fiber Bragg grating
A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and transmits all others. This is achieved by creating a periodic variation in the refractive index of the fiber core, which generates a wavelength-specific dielectric mirror. A fiber Bragg grating can therefore be used as an inline optical filter to block certain wavelengths, or as a wavelength-specific reflector.