Devika Dass
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View article: Beyond Redundancy: Toward Agile Resilience in Optical Networks to Overcome Unpredictable Disasters
Beyond Redundancy: Toward Agile Resilience in Optical Networks to Overcome Unpredictable Disasters Open
Resilience in optical networks has traditionally relied on redundancy and pre-planned recovery strategies, both of which assume a certain level of disaster predictability. However, recent environmental changes such as climate shifts, the e…
View article: Heterogeneous transmission of analog radio and digital coherent signals over multispan metro and PON for bandwidth-efficient fronthaul in mmWave centralized RANs [Invited]
Heterogeneous transmission of analog radio and digital coherent signals over multispan metro and PON for bandwidth-efficient fronthaul in mmWave centralized RANs [Invited] Open
We experimentally investigate the transparent coexistence of heterogeneous analog radio-over-fiber (ARoF) and digital coherent optical (DCO) signals in a converged metro network/passive optical network (PON). Our streamlined setup employs …
View article: Experimental Evaluation of an SDN Controller for Open Optical-circuit-switched Networks
Experimental Evaluation of an SDN Controller for Open Optical-circuit-switched Networks Open
Open optical networks have been considered to be important for cost-effectively building and operating the networks. Recently, the optical-circuit-switches (OCSes) have attracted industry and academia because of their cost efficiency and h…
View article: Dual-Wavelength-Modulation mm-Wave and THz Systems: Analysis and Experimental Demonstration At 60 GHz With a Gain-Switched Laser
Dual-Wavelength-Modulation mm-Wave and THz Systems: Analysis and Experimental Demonstration At 60 GHz With a Gain-Switched Laser Open
Dual-wavelength-modulation (dual-λ-mod) photonic mm-wave/THz transmitters are an attractive alternative to conventional heterodyne systems for their simplicity. In this paper, dual-λ-mod systems are analysed, paying special attention to th…
View article: Multi-frequency 5G NR millimeter-wave signal generation over analog RoF link using optical frequency combs
Multi-frequency 5G NR millimeter-wave signal generation over analog RoF link using optical frequency combs Open
Optical heterodyne analog radio-over-fiber (A-RoF) links can provide a cost-effective and spectrally efficient solution for the generation and distribution of millimeter-wave/Terahertz (mm-wave/THz) carriers for the next-generation wireles…
View article: Low Noise Ultra-Flexible SiP Switching Platform for mmWave OCDM & Multi-Band OFDM ARoF Fronthaul
Low Noise Ultra-Flexible SiP Switching Platform for mmWave OCDM & Multi-Band OFDM ARoF Fronthaul Open
A highly flexible wavelength and space switched analog radio-over-fiber (ARoF) fronthaul transmission of a millimeter-wave (mmWave) emerging 6G waveform over a centralized/ cloud radio access network (C-RAN) is experimentally demonstrated …
View article: Bandwidth Re-Configurable Wideband QAM-OFDM With Hybrid Integrated InP-Si$_{3}$N$_{4}$ Tunable Laser Source for Short-Reach Systems
Bandwidth Re-Configurable Wideband QAM-OFDM With Hybrid Integrated InP-Si$_{3}$N$_{4}$ Tunable Laser Source for Short-Reach Systems Open
High-capacity data transmission for intra/inter-data centre links has become necessary to accommodate the massive increase in data traffic. Data transmission needs to be reconfigured based on instantaneous demand or based on certain cyclic…
View article: Injection Locking Properties of an Dual Laser Source for mm-Wave Communications
Injection Locking Properties of an Dual Laser Source for mm-Wave Communications Open
We for the first time, the optical injection locking (OIL) to a frequency comb of a hybrid dual laser source for high-purity mm-wave generation through optical heterodyning. Key performance parameters of the comb line demultiplexing funct…
View article: Wavelength & mm-Wave Flexible Converged Optical Fronthaul With a Low Noise Si-Based Integrated Dual Laser Source
Wavelength & mm-Wave Flexible Converged Optical Fronthaul With a Low Noise Si-Based Integrated Dual Laser Source Open
A widely tunable hybrid InP-Si 3 N 4 dual laser module (DLM) with low linewidth and relative intensity noise (RIN) is used to develop a wavelength and frequency flexible optical fronthaul system for high-capacity wireless networks. The wav…
View article: InP-Si3N4 Hybrid Integrated Optical Source for High-purity Mm-wave Communications
InP-Si3N4 Hybrid Integrated Optical Source for High-purity Mm-wave Communications Open
We present the optical injection locking to a comb of a hybrid InP-Si 3 N 4 dual laser source for high-purity mm-wave generation. Key performance parameters such as adjacent-comb-line side mode suppression ratio and locking range are repor…
View article: Orthogonal Chirp-Division Multiplexing for Future Converged Optical/Millimeter-Wave Radio Access Networks
Orthogonal Chirp-Division Multiplexing for Future Converged Optical/Millimeter-Wave Radio Access Networks Open
Envisaged network scaling in the beyond 5G and 6G era makes the optical transport of high bandwidth radio signals a critical aspect for future radio access networks (RANs), while the move toward wireless transmission in millimeter-wave (mm…
View article: Intra-Data Centre Flexible PAM Transmission System Using an Integrated InP-Si<sub>3</sub>N<sub>4</sub> Dual Laser Module
Intra-Data Centre Flexible PAM Transmission System Using an Integrated InP-Si<sub>3</sub>N<sub>4</sub> Dual Laser Module Open
Flexible Pulse Amplitude Modulation (FlexPAM) consists of the use of non-standard PAM formats, such as PAM-5 or PAM-6, to increase the granularity of the link capacity for a given baud rate. In this paper, we demonstrate FlexPAM systems as…
View article: 28 GBd PAM-8 transmission over a 100 nm range using an InP-Si<sub>3</sub>N<sub>4</sub> based integrated dual tunable laser module
28 GBd PAM-8 transmission over a 100 nm range using an InP-Si<sub>3</sub>N<sub>4</sub> based integrated dual tunable laser module Open
This paper describes the detailed characterization of a novel InP-Si 3 N 4 dual laser module with results revealing relative intensity noise (RIN) as low as −165 dB/Hz and wide wavelength tunability (100 nm). The hybrid coupled laser is de…
View article: Flexible Converged Photonic and Radio Systems: A Pathway toward Next Generation Wireless Connectivity
Flexible Converged Photonic and Radio Systems: A Pathway toward Next Generation Wireless Connectivity Open
The development of ultra-dense mobile networks is contingent on effective co-design of optical and wireless systems. This work proposes the convergence of emerging photonic/radio technologies to form a platform for future wireless communic…
View article: Analysis of Phase Noise in a Hybrid Photonic/Millimetre-Wave System for Single and Multi-Carrier Radio Applications
Analysis of Phase Noise in a Hybrid Photonic/Millimetre-Wave System for Single and Multi-Carrier Radio Applications Open
The future evolution of wireless networks, throughout the 5G era and beyond, will require the expansion and augmentation of millimetre-wave systems for both terrestrial and satellite communications. Photonic technologies offer a cost effic…