Principal modes in multimode fibers: exploring the crossover from weak to strong mode coupling
arXiv:1609.02516 · doi:10.1364/OE.25.002709
Abstract
We present experimental and numerical studies on principal modes in a multimode fiber with mode coupling. By applying external stress to the fiber and gradually adjusting the stress, we have realized a transition from weak to strong mode coupling, which corresponds to the transition from single scattering to multiple scattering in mode space. Our experiments show that principal modes have distinct spatial and spectral characteristic in the weak and strong mode coupling regimes. We also investigate the bandwidth of the principal modes, in particular, the dependence of the bandwidth on the delay time, and the effects of the mode-dependent loss. By analyzing the path-length distributions, we discover two distinct mechanisms that are responsible for the bandwidth of principal modes in weak and strong mode coupling regimes. Taking into account the mode-dependent loss in the fiber, our numerical results are in good agreement with our experimental observations. Our study paves the way for exploring potential applications of principal modes in communication, imaging and spectroscopy.
References in corpus (26)
- Space Division Multiplexing in Optical Fibres
- Measuring the Transmission Matrix in Optics : An Approach to the Study and Control of Light Propagation in Disordered Media
- Focusing and Compression of Ultrashort Pulses through Scattering Media
- Universal optimal transmission of light through disordered materials
- Multimode optical fiber based spectrometers
- Control of light transmission through opaque scattering media in space and time
- Statistics of Group Delays in Multimode Fiber with Strong Mode Coupling
- Real-time resilient focusing through a bending multimode fiber
- Shaping speckles: spatio-temporal focussing of an ultrafast pulse through a multiply scattering medium
- Using a multimode fiber as a high resolution, low loss spectrometer
- High-resolution and broadband all-fiber spectrometers
- Digital confocal microscopy through a multimode fiber
- Spatiotemporal coherent control of light through a multiply scattering medium with the Multi-Spectral Transmission Matrix
- Coherent control of total transmission of light through disordered media
- Spatio-temporal Control of Light Transmission through a Multimode Fiber with Strong Mode Coupling
- Full transmission and reflection of waves propagating through a maze of disorder
- Deterministic control of broadband light through a multiply scattering medium via the multispectral transmission matrix
- Transmission eigenvalues and the bare conductance in the crossover to Anderson localization
- Control of energy density inside disordered medium by coupling to open or closed channels
- Broadband multimode fiber spectrometer
- Generating particle-like scattering states in wave transport
- High-throughput Imaging of Self-luminous Objects through a Single Optical Fiber
- Control of mesoscopic transport by modifying transmission channels in opaque media
- Dynamic and spectral properties of transmission eigenchannels in random media
- Focusing through random media in space and time: a transmission matrix approach
- Reflection resonances in surface-disordered waveguides: strong higher-order effects of the disorder
Cited by in corpus (16)
- Mechanisms of Spatiotemporal Mode-Locking
- Single multimode fiber for in vivo light-field encoded nano-imaging
- Controlling light propagation in multimode fibers for imaging, spectroscopy and beyond
- Compressively sampling the optical transmission matrix of a multimode fibre
- Memory effect assisted imaging through multimode optical fibres
- Turning Optical Complex Media into Universal Reconfigurable Linear Operators by Wavefront Shaping
- Seeing through multimode fibers with real-valued intensity transmission matrices
- Spatio-temporal correlations in multimode fibers for pulse delivery
- Control of the temporal and polarization response of a multimode fiber
- Super- and Anti-Principal Modes in Multi-Mode Waveguides
- Shaping Microwave Fields using Non-Linear Unsolicited Feedback: Application to Enhanced Energy Harvesting
- Multimode fiber based single-shot full-field measurement of optical pulses
- Space-time adaptive control of femtosecond pulses amplified in a multimode fiber
- Spectral form factor and energy correlations in banded random matrices
- Coherent Wave Propagation in Multi-Mode systems with Correlated Noise
- Correlating light fields through disordered media across multiple degrees of freedom