搜索结果: 1-14 共查到“光学仪器及技术 Measurement”相关记录14条 . 查询时间(0.118 秒)
Distributed Birefringence Measurement of Polarization Maintaining Fiber Using Transient Brillouin Grating
Fibers polarization maintaining Scattering stimulated Brillouin
2015/6/10
We propose a true distributed birefringence measurement of polarization-maintaining fiber based on transient Brillouin grating. A birefringence variation of 2.5×10 -6 along 8 m Bow-tie fiber is measur...
Phase to Intensity Modulation Conversion by Third-Order Dispersion and Its Effect on Group Velocity Dispersion Measurement Using Phase-Modulated CW Light
Dispersion Phase modulation
2015/6/9
We show that phase to intensity modulation conversion induced by third-order dispersion doubles the modulation frequency, and therefore, the third-order dispersion does not affect group velocity dispe...
Novel OSA-Based Method for In-Band OSNR Measurement
Networks wavelength routing Metrological instrumentation
2015/6/4
A new approach for in-band OSNR measurements in narrow DWDM channels is described, which is robust to PMD and enables rapid measurement of accurate OSNR values of>20 dB without need for polarization e...
Characterization of a Mode-Locked Quantum-Dash Fabry-Perot Laser Based on Measurement of the Complex Optical Spectrum
Mode-Locked Quantum-Dash Fabry-Perot Laser Complex Optical Spectrum
2015/7/17
By measuring the complex optical spectrum using a half-rate, sinusoidal modulation method, a mode locked quantum-dash Fabry-Perot laser is characterized for free-running operation and actively mode-lo...
Measurement of Fiber Chromatic Dispersion Using Spectral Interferometry with Modulation of Dispersed Laser Pulses
Chromatic Dispersion Spectral Interferometry Modulation Dispersed Laser Pulses
2015/7/16
We propose and experimentally demonstrate a simple accurate method for fiber dispersion measurement based on modulation of laser pulses stretched by the tested fiber. The spectral interferometry is im...
Fast SOP Variation Measurement on WDM Systems Are the OPMDC Fast Enough?
Fast SOP Variation Measurement WDM Systems Are OPMDC
2015/7/16
Orange Labs organized a 6 month field trial to characterize states of polarization (SOP) variations with time on representative links of the future 40 Gbit/s deployment and to enable specifying the ad...
Straightforward Chromatic Dispersion Measurement Based on Phase Mismatching FWM
Straightforward Chromatic Dispersion Measurement Mismatching FWM
2015/7/15
Novel chromatic dispersion measurement is demonstrated with simple setup based on phase mismatching four-wave-mixing. According to high accuracy of measured dispersion spectra, zero-dispersion wavelen...
Localized Measurement of Linear Polarization Rotation Parameters in Short Optical Fibers
Localized Measurement Linear Polarization Rotation Parameters
2015/7/15
We present a novel measurement technique for precise longitudinal characterization of polarization parameters in optical fibers based on the modified counter-colliding scanner technique.
10 cm spatial resolution and 20 km range full polarimetric reflectometry for distributed DGD measurement of high PMD fibres
polarimetric reflectometry distributed DGD measurement PMD fibres
2015/7/15
Full polarimetric reflectometry is realized with a spatial resolution of 10 cm over 20 km based on phase-noise compensated optical frequency domain reflectometry. Distributed DGD measurement of high P...
Measurement of Sub-1dB Noise Figure in a Non-Degenerate Cascaded Phase-Sensitive Fibre Parametric Amplifier
Measurement Noise Figure Non-Degenerate Cascaded Phase-Sensitive Fibre Parametric Amplifier
2015/7/14
Noise figure (NF) spectrum as well as its signal-power-dependence in a non-degenerate cascaded phase-sensitive fibre parametric amplifier was characterized. A 0.8dB NF (2dB below the conventional quan...
40-km Range, 1-m Resolution Measurement Based on Phase-noise- compensated Coherent Optical Frequency Domain Reflectometry
Resolution Measurement Phase-noise-compensated Coherent Optical Frequency Domain Reflectometry
2015/8/4
We present 40-km range, 1-m spatial resolution and highly sensitive measurement based on phase-noise-compensated OFDR that employs a concatenative reference method.
Direct measurement of amplitude and phase temporal responses of ultrahigh-speed optical modulators
amplitude phase temporal responses ultrahigh-speed optical modulators
2015/7/31
We demonstrate a direct measurement of the complex ultra-fast temporal response of optical modulators (with a bandwidth ～ 40GHz in the reported example) enabling real-time characterization of instant...
Accurate measurement of fourth order dispersion coefficient in short highly nonlinear fibers
Accurate measurement fourth order dispersion coefficient short highly nonlinear fibers
2015/7/30
An improved four-wave-mixing method capable of measuring ultra-low values of the fourth-order dispersion coefficient in short highly nonlinear fibers is introduced and validated experimentally.
Measurement of Non Linear Thresholds in O-OFDM Systems with Respect to Data Pattern and Peak Power to Average Ratio
O-OFDM Systems Respect Peak Power Average Ratio
2015/7/30
We investigated the non linear threshold of a coherent O-OFDM system. An improvement for NLT of about 2.5dB was demonstrated either by reducing the data pattern length or clipping of the OFDM signal.