Comparative analysis of the DFB fiber laser and fiber-optic interferometric strain sensors [PDF]
, 2007 The DFB fiber laser strain sensor is shown to provide an improvement in the minimum detectable length change by a factor of 275 at 2 kHz for an applied strain when compared with an interferometric sensor interrogated by at equivalent DFB laser.
Kirkendall, C. K. +2 more
core +4 more sources
Algorithm based comparison between the integral method and harmonic analysis of the timing jitter of diode-based and solid-state pulsed laser sources [PDF]
, 2015 A comparison between two methods of timing jitter calculation is presented. The integral method utilizes spectral area of the single side-band (SSB) phase noise spectrum to calculate root mean square (rms) timing jitter. In contrast the harmonic analysis
Edwards, T. J. +8 more
core +1 more source
Multi-Level Phase Noise Model for CO-OFDM Spatial-Division Multiplexed Transmission
Photonics, 2022 Spatial division multiplexed (SDM) transmission systems with coherence communication technology have become an important issue in meeting the demands for the capacity of fiber.
Guozhou Jiang, Liu Yang
doaj +1 more source
Distributed Vibration Sensor With Laser Phase-Noise Immunity by Phase-Extraction φ-OTDR
Photonic Sensors, 2019 We have demonstrated a distributed vibration sensor based on phase-sensitive optical time-domain reflectometer (φ-OTDR) system exhibiting immunity to the laser phase noise. Two laser sources with different linewidth and phase noise levels are used in the
Yuying Shao +7 more
doaj +1 more source
Phase-Shift Laser Ranging Technology Based on Multi-Frequency Carrier Phase Modulation
Photonics, 2022 Compared to traditional phase laser ranging technology, phase-shift laser ranging technology based on carrier phase modulation has significant advantages, such as simple modulation and demodulation, as well as simultaneous ranging and velocity ...
Lisha Zhou +3 more
doaj +1 more source
Phase noise of four-wave mixing in semiconductor lasers [PDF]
Applied Physics Letters, 1992 A simple theoretical analysis shows that the linewidth of the conjugate wave produced in four-wave mixing in semiconductor lasers is equal to the linewidth of the probe plus four times the linewidth of the pump. Experimental results in good agreement with the theory are presented.
HUI R., MECOZZI, ANTONIO
openaire +3 more sources
Efficient phase unwrapping [PDF]
, 2005 In the field of optical interferometry, two-dimensional projections of light interference patterns are often analysed in order to obtain measurements of interest.
AI-Sawaf, Firas
core +3 more sources
IEEE Photonics Journal, 2017 Laser phase noise tolerance in direct detection optical orthogonal frequency division multiplexing (OFDM) transmission system is experimentally demonstrated using laser linewidth emulator.
Y. N. Ali, Z. Zan
doaj +1 more source
Fourier and Inverse Fourier Transform Model for Delayed Self-interferometry System
IEEE Photonics Journal, 2020 Understanding the effects of laser phase and frequency noise on laser interferometry is significant for evaluating the system performance. To precisely study the performance limit caused by laser frequency noise, here we propose and demonstrate a ...
Ling Zhang +8 more
doaj +1 more source
From ultra-noisy to ultra-stable: Optimization of the optoelectronic laser lock [PDF]
APL PhotonicsWe demonstrate the direct locking of a 820 kHz linewidth semiconductor distributed feedback laser to a high finesse, compact, and ultrastable reference cavity using the optoelectronic (OEO) laser locking method, resulting in cavity thermal noise-limited ...
Takuma Nakamura +7 more
doaj +1 more source