Manchester Return-to-Zero On–Off Keying Modulation for Free-Space Optical Communication
PhotonicsThis paper proposes a Manchester return-to-zero on–off keying (M-RZ-OOK) modulation for free-space optical (FSO) communication. M-RZ-OOK modulation is achieved by introducing Manchester coding into the RZ-OOK format.
Wenhao Zong +4 more
doaj +1 more source
Protograph-Based LDPC Code Design for Probabilistic Shaping with On-Off Keying
, 2019 This work investigates protograph-based LDPC codes for the AWGN channel with OOK modulation. A non-uniform distribution of the OOK modulation symbols is considered to improve the power efficiency especially for low SNRs.
Git, Alexandru Dominic +2 more
core +1 more source
Convolutional coded dual header pulse interval modulation for line of sight photonic wireless links. [PDF]
, 2009 The analysis and simulation for convolutional coded dual header pulse interval modulation (CC-DH-PIM) scheme using a rate ½ convolutional code with the constraint length of 3 is presented.
Al-Ghamdi +8 more
core +1 more source
An 80 Gb/s Silicon Photonic Modulator Based on the Principle of Overlapped Resonances
IEEE Photonics Journal, 2017 We report a silicon photonic modulator based on a Mach–Zehnder interferometer (MZI) loaded with a microring modulator (MRM) on one arm and a microring resonator (MRR) on the other arm.
Rui Li +7 more
doaj +1 more source
Chirp-based direct phase modulation of VCSELs for cost-effective transceivers [PDF]
, 2017 A 2.5Gb/s DPSK transmitter based on direct phase modulation of a VCSEL using its own chirp is proposed. The VCSEL, which wavelength is 1539.84nm, has been characterized both static and dynamically.
Altabas, Jose Antonio +3 more
core +2 more sources
Application and Analysis of Performance of DQPSK Advanced Modulation Format in Spectral Amplitude Coding OCDMA [PDF]
Mehran University Research Journal of Engineering and Technology, 2014 SAC (Spectral Amplitude Coding) is a technique of OCDMA (Optical Code Division Multiple Access) to encode and decode data bits by utilizing spectral components of the broadband source.
Abdul Latif Memon +2 more
doaj
125 Gbit/s discretely tunable InP-on-silicon filtered feedback laser with sub-nanosecond wavelength switching times [PDF]
, 2018 A heterogeneously integrated InP-on-silicon fast tunable filtered feedback laser is demonstrated. The laser device consists of a main Fabry-Pérot cavity connected to an integrated arrayed waveguide grating of which the outputs form external cavities in ...
+3 more
core +2 more sources
Multi-Format Wavelength Conversion Using Quantum Dash Mode-Locked Laser Pumps
Photonics, 2015 We investigate and compare the performance of wavelength conversion for two different non-return-to-zero (NRZ) modulation formats at 40 Gb/s: on off keying (OOK) and differential phase-shift keying (DPSK).
Yousra Ben M’Sallem +3 more
doaj +1 more source
Low Power FPGA Implementation of a Smart Building Free Space Optical Communication System
Photonics, 2022 Free Space Optical (FSO) communication systems have extensively invaded the speed of smart city evolution due to the current surge in demand for wireless communication spots that can match recent challenges due to high technical leaps in smart city ...
Rehab Ali +4 more
doaj +1 more source
, 2015 In this paper, we investigate and compare the performance of single- and multi-carrier modulation schemes for indoor visible light communication (VLC).
Aminikashani, Mohammadreza +1 more
core +1 more source