Results 31 to 40 of about 6,304,985 (297)

Phase noise of diode laser in self-mixing interference

Optics Express, 2005
We investigate the phase noise of a diode laser based on the interferometric self-mixing effect. A detuned Fabry-Perot cavity converts the phase noise into intensity noise, and the noise is measured by the novel method as a function of the amount of feedback and the distance between the target and the laser front facet. Experimental results can be well
Tao, Geng, Gang, Li, Yuchi, Zhang, Junmin, Wang, Tiancai, Zhang   +4 more
openaire   +2 more sources

Frequency and phase locking of laser cavity solitons [PDF]

, 2012
Self-localized states or dissipative solitons have the freedom of translation in systems with a homogeneous background. When compared to cavity solitons in coherently driven nonlinear optical systems, laser cavity solitons have the additional freedom of ...
Noblet, Y., Oppo, G-L, Paulau, P.V., Firth, W. J., Ackemann, T., Colet, P., McIntyre, C.   +6 more
core   +3 more sources

Bifurcation analysis of a semiconductor laser with filtered optical feedback [PDF]

, 2006
We study the dynamics and bifurcations of a semiconductor laser with delayed filtered feedback, where a part of the output of the laser re-enters after spectral filtering.
Erzgraeber, H., Krauskopf, B., Erzgraeber, H, Lenstra, D., Bernd Krauskopf, H. Erzgraber, Lenstra, D, Erzgraber, H, Krauskopf, B, Daan Lenstra   +9 more
core   +1 more source

Modeling and comparison of residual laser noise in geometric TDI combinations with onboard optical delays

Frontiers in Astronomy and Space Sciences
Time-Delay Interferometry (TDI) is the main method for reducing laser phase noise in space-based gravitational wave detection. In addition to inter-spacecraft signal delays, onboard optical delays within each spacecraft, including the local, adjacent ...
Wan-Qi Yang, Pan-Pan Wang, Xin-Lei Zhao, Zi-Jiang Yang, Cheng-Gang Shao   +4 more
doaj   +1 more source

Analytical Investigations on Carrier Phase Recovery in Dispersion-Unmanaged n-PSK Coherent Optical Communication Systems

Photonics, 2016
Using coherent optical detection and digital signal processing, laser phase noise and equalization enhanced phase noise can be effectively mitigated using the feed-forward and feed-back carrier phase recovery approaches.
Tianhua Xu, Gunnar Jacobsen, Sergei Popov, Jie Li, Tiegen Liu, Yimo Zhang, Polina Bayvel   +6 more
doaj   +1 more source

Laser Phase Noise Compensation Method Based on Dual Reference Channels in Inverse Synthetic Aperture Lidar

Remote Sensing
Laser phase noise is a critical factor that limits the range and performance of coherent lidar systems, especially in high-resolution applications such as inverse synthetic aperture lidar (ISAL), which demands stringent coherence.
Dengfeng Liu, Chen Xu, Yutang Li, Anpeng Song, Jian Li, Kai Jin, Xi Luo, Kai Wei   +7 more
doaj   +1 more source

Asymptotic stochastic characterization of phase and amplitude noise in free-running oscillators [PDF]

, 2011
Starting from the definition of the stochastic differential equation for amplitude and phase fluctuations of an oscillator described by an ordinary differential equation, we study the associated Fokker–Planck equation by using tools from stochastic ...
Bonani, Fabrizio, FABRIZIO BONANI, Traversa, Fabio Lorenzo, FABIO L. TRAVERSA   +3 more
core   +1 more source

Optimisation of DSF and SOA based phase conjugators by incorporating noise-suppressing fibre gratings

, 1997
We compare the performance of dispersion-shifted-fibre (DSF) and semiconductor-optical-amplifier (SOA) based phase conjugators for a 10 Gb/s non-return-to-zero system with respect to conversion efficiency, noise figure and distortion.
Laming, R.I., Reekie, L., Cole, M.J., Geiger, H., Set, S.Y.   +4 more
core   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

Weak-Light Phase-Locking Time Delay Interferometry with Optical Frequency Combs

Sensors, 2022
In the future space-borne gravitational wave (GW) detector, the optical transponder scheme, i.e., the phase-locking scheme, will be utilized so as to maintain the signal-to-noise ratio (SNR).
Mingyang Xu, Hanzhong Wu, Yurong Liang, Dan Luo, Panpan Wang, Yujie Tan, Chenggang Shao   +6 more
doaj   +1 more source