Kerr effect based spectrum sliced wavelength division multiplexing for free space optical communication

Thakur, Anshul; Nagpal, Shaina; Gupta, Amit

doi:10.1016/j.ijleo.2017.08.062

Cited by 28 publications

(4 citation statements)

References 15 publications

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“…The primary objective is to design a large‐capacity high‐reach Ro‐FSO transmission system by exploiting self‐phase modulation (SPM) in a high nonlinearity fiber (HNLF) to generate a high‐powered broad‐spectrum pulse which is then spectrum sliced into four distinct wavelength channels where each channel is mode division multiplexed using distinct LG modes. For HNLF, the nonlinearity proportionality constant can be expressed using the following equation

γ_{normalSPM} = \frac{2 π n^{2}}{λ A_{normaleff}}

where γ SPM denotes nonlinearity in rad/W m, n deontes refractive index, λ denotes operating wavelength, and A eff denotes the effective area of HNLF.…”

Section: Proposed Ro‐fso Link Architecturementioning

confidence: 99%

Enhanced performance analysis of a hybrid spectrum sliced‐wavelength division multiplexing‐mode division multiplexing‐orthogonal frequency division multiplexing based radio‐over‐free space optics

Grover

Sheetal

Dhasarathan

2020

Trans Emerging Tel Tech

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In this work, we report the use of self-phase modulation in a high nonlinearity fiber for super continuum frequency generation which is spectrum-sliced using a demultiplexer. Four channels (193-193.225 THz) are sliced with 75 GHz channel spacing. Each wavelength channel transports two distinct sub-channels with 20 Gbit/s-40 GHz data rate over different Laguerre Gaussian spatial modes (LG02 and LG03) using the proposed hybrid spectrum sliced-wavelength division multiplexing-mode division multiplexing based orthogonal frequency division multiplexing-radio-over-free space optics link. The performance of the proposed link is investigated using numerical simulations. 160 Gbit/s-320 GHz data is transmitted at 20 km for clear conditions with reliable performance. We have also analyzed the link performance under different level of fog weather. Further to maximize the link reach, we have proposed an enhanced detection at the receiver terminal. The results of numerical investigation of the link show an improvement of 40 dB in signal-to-noise ratio and received power under different weather conditions using the proposed detection technique.

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γ_{normalSPM} = \frac{2 π n^{2}}{λ A_{normaleff}}

where γ SPM denotes nonlinearity in rad/W m, n deontes refractive index, λ denotes operating wavelength, and A eff denotes the effective area of HNLF.…”

Section: Proposed Ro‐fso Link Architecturementioning

confidence: 99%

Enhanced performance analysis of a hybrid spectrum sliced‐wavelength division multiplexing‐mode division multiplexing‐orthogonal frequency division multiplexing based radio‐over‐free space optics

Grover

Sheetal

Dhasarathan

2020

Trans Emerging Tel Tech

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show abstract

“…The advantages of FSO include enormous modulation bandwidth, low cost of deployment, fast deployment time, unlicensed spectrum, and no electromagnetic interference (EMI) [4]. Highly nonlinear ber (HNLF) used for supercontinuum (SC) generation in SS-WDM based FSO [3].…”

Section: Introductionmentioning

confidence: 99%

Spectrum-sliced wavelength division multiplexing based single and dual channel free space optical communication employing differential phase modulation formats

Yarra

Prince

et al. 2023

Preprint

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A spectrum-sliced (SS) Wavelength division multiplexing (WDM) based Free-space optical (FSO) communication system at a data rate of 2.5 Gbps per optical carrier is proposed in this research article. Utilizing the broadening of the spectrum by means of supercontinuum generation in a highly non linear Fiber (HNLF), an SS-WDM based FSO system is designed. The narrow spectrum of laser light source is broadened by means of self phase modulation (SPM). The proposed work reveals that the DQPSK based SS-WDM FSO system has higher performance compared to intensity modulation formats as well as other differential phase modulation formats. Considering various values of FSO link distances, antenna diameters of transmitter and receiver, beam divergence and thus, determining the values of performance metrics such as Q-factor and bit error rate (BER), differential quadrature phase shift keying (DQPSK) based SS-WDM FSO system is simulated. The same process is repeated for dual channel FSO system for DPSK and DQPSK.

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“…Since the light beams are transmitted through free space, no ber optic cable is required.The advantages of FSO include enormous modulation bandwidth, low cost of deployment, fast deployment time, unlicensed spectrum, and no electromagnetic interference (EMI) [4]. Highly nonlinear ber (HNLF) used for supercontinuum (SC) generation in SS-WDM based FSO [3].The signal from the CW Laser is fed into HNLF. HNLF molecules hop and start vibrations.…”

Section: Introductionmentioning

confidence: 99%

Spectrum-sliced wavelength division multiplexing based free space optical communication employing differential quadrature phase-shift keying

Yarra

2022

Preprint

View full text Add to dashboard Cite

A spectrum-sliced (SS) Wavelength division multiplexing (WDM) based Free-space optical (FSO) communication system at a data rate of 2.5 Gbps per channel is proposed in this research article. Utilizing the broadening of the spectrum by means of supercontinuum generation in a highly non linear Fiber (HNLF), an SS-WDM based FSO system is designed. The narrow spectrum of laser light source is broadened by means of self phase modulation (SPM). The proposed work reveals that the DQPSK based SS-WDM FSO system has higher performance compared to intensity modulation formats as well as differential phase modulation formats. Considering various values of FSO link distances, antenna diameters of transmitter and receiver, beam divergence and thus, determining the values of performance metrics such as Q-factor and BER, differential quadrature phase shift keying (DQPSK) based SS-WDM FSO system is simulated.

show abstract

Kerr effect based spectrum sliced wavelength division multiplexing for free space optical communication

Cited by 28 publications

References 15 publications

Enhanced performance analysis of a hybrid spectrum sliced‐wavelength division multiplexing‐mode division multiplexing‐orthogonal frequency division multiplexing based radio‐over‐free space optics

Enhanced performance analysis of a hybrid spectrum sliced‐wavelength division multiplexing‐mode division multiplexing‐orthogonal frequency division multiplexing based radio‐over‐free space optics

Spectrum-sliced wavelength division multiplexing based single and dual channel free space optical communication employing differential phase modulation formats

Spectrum-sliced wavelength division multiplexing based free space optical communication employing differential quadrature phase-shift keying

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