Results 251 to 260 of about 544,818 (296)

Slotted multimode-interference devices

Applied Optics, 2004
We describe a novel modification of multimode-interference devices that has broad applicability. The modification involves introducing a slot (or slots), of a specific width and effective refractive index and at a specific position, that runs the longitudinal length of the multimode-interference region. Introducing N slots reduces the self-image length
David M, Mackie, Andrew W, Lee
openaire   +2 more sources

Wireless Interference Recognition With Multimodal Learning [PDF]

IEEE Transactions on Wireless Communications
In non-cooperative communications, malicious electromagnetic interference attacks communication systems and causes higher probability of communication disruption. In order to address the challenges posed by electromagnetic interference, the wireless interference recognition technique has emerged, which identifies the interference signals without priori
Pengyu Wang 0009, Ke Ma 0006, Yingshuang Bai, Chen Sun 0006, Zhaocheng Wang 0001, Sheng Chen 0001   +5 more
openaire   +2 more sources

Multimode interference (MMI) devices

Proceedings of the 8th International Conference on Frontiers of Information Technology, 2010
Multimode interference effect and the principle of self-imaging can be exploited to create optical devices like couplers, splitters and filters. MMI devices have gained more importance in the past few years and have proved to perform better than other optical devices.
Sundas Amin, Khurram Aziz
openaire   +2 more sources

Multimode interference-based fiber-optic displacement sensor

IEEE Photonics Technology Letters, 2003
A new concept for a multimode interference-based fiber-optic displacement sensor is investigated both theoretically and experimentally. By applying multimode interference and reimaging theory to optical fibers, a displacement sensor consisting of only a ...
Waleed Mohammed, E G Johnson
exaly   +3 more sources

Multimode interference devices with single-mode–multimode–multimode fiber structure

Applied Optics, 2014
We present a single-mode-multimode-multimode (SMm) fiber structure with a few interesting device applications. Unlike the single-mode-multimode-single-mode (SMS) structure, SMm has the unique feature of more than one mode in the output fiber. A detailed physical understanding of the transmission properties, and the differences from the SMS structure ...
BHATIA, N, JOHN, J
openaire   +3 more sources

Biphoton interference with a multimode pump

Physical Review A, 2001
We study the interference of biphotons generated via spontaneous parametric down-conversion from a pump with several longitudinal modes. It is shown that biphotons can interfere if the time difference between their birth moments is a multiple, to an accuracy of the pump coherence time, of $T\ensuremath{\equiv}2L/c,$ where L is the pump cavity length ...
Burlakov, A., Chekhova, M., Karabutova, O., Kulik, S.   +3 more
openaire   +2 more sources

Multimode interference in sensor applications

SPIE Proceedings, 2015
In the paper is presented a numerical analysis of optical sensors based on gradient index multimode interference structures (MMI) made by sodium-potassium ion exchange is presented. Variations of external propagation conditions change the mode properties and as a result the modal fields interference pattern and the signal distribution at the output ...
Marek Blahut, Artur Szewczuk
openaire   +1 more source

Multimode interference spectrometer

SPIE Proceedings, 2004
Designs and simulations for a class of integrated photonic lightwave circuit spectrometers with low manufacturing tolerance are presented. The designs are applicable to all material platforms, including, but not limited to, silicon, glass, polymer, sol-gel, and gallium arsenide.
openaire   +1 more source

Tunable multimode interference devices

SPIE Proceedings, 2006
A tunable multimode interference (MMI) coupler that operates by modifying the phase of the multiple images that are formed around the midpoint of the MMI section is demonstrated. The phase change is achieved by current injection, and therefore minimizing current spreading is crucial for optimal operation.
May-Arrioja, D. A., LiKamWa, P.
openaire   +2 more sources

Multimode Interference in Plasmonic Metamaterials

IEEE Photonics Technology Letters, 2017
We studied multimode interference effect in a metamaterial constructed by silver nanorod pair arrays. Dipole electric resonance (ER), quadrupole magnetic resonance (MR), and Rayleigh anomaly (RA) are supported in this structure. Interference effect between either two modes is analyzed.
Xiaobin Hu, Tong Li, Wenbo Wang, Xin Wei
openaire   +1 more source