Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Storage And Generation Of Optically Encoded Pulse Sequence Using A SRS-Invertor With Feedback

Mikhail P. Petrov, Vladimir I. Belotitskii, Evgeny A. Kuzin, M. A. Maksutenko, Vasilii V. Spirin

Published Feb 8, 1989• 0 citations
Publisher

Abstract

We discuss the principles of development of optical logic elements using stimulated scattering in fibers.,Theoretical estimates show that it ip possilAe to movide a pulse repetition rate of 10 12 pule/s, pump pulse energy of 10 -l2 - 10 -13 J/μ 2 , and signal pulse energy of 10 -15 J/)μm 2 . Attention is focussed on the SRS-invertor and possibility of its usage for development of generators of optical pulse sequencies and fiber-optic memories.

DOI
10.1117/12.947877

Related papers

Long-term storage of a bit stream of pulses by stimulated Raman scattering

Evgeny A. Kuzin, J. J. Sánchez-Mondragón, V. A. Vysloukh +3 more

The possibility of providing long-term storage of a binary sequence of pulses circulating in a fiber loop is discussed. The regeneration of the sequence is achieved by a fiber logic gate based on stimulated Raman scattering. Estimations show that a possible pulse repetition rate of 1010 Hz for the stimulated-Raman-scattering gate operation can be expected for an average pump power of 1 W. The circulation of the binary sequence of 100-ps pulses was observed during 10 min in a loop 870 m long. It corresponds to more than 106 round trips around the loop.

Journal of the Optical Society of America B•Jun 1, 1997•1 citation

Long-term all-optical ring fibre memory based on stimulated Raman scattering

Mikhail P. Petrov, Vladimir I. Belotitskii, Evgeny A. Kuzin +1 more

The feasibility of constructing an all-optical dynamic memory based on stimulated Raman scattering (SRS) in a fibre waveguide is discussed. A possible use of an SRS inverter for regeneration of optical signals is considered. Theoretical and experimental investigations are reported of the functional properties of an SRS inverter. The construction and investigation of a prototype all-optical fibre memory with an SRS inverter are described. The repetition frequency of the optical pulses along a fibre loop is 100 MHz and the loop capacity is 500 bits. Pulse circulation is reported over a period of 10 min at an average pump power of 2 W. The response time and the energy requirements of devices with an SRS inverter, and ways of improving their characteristics are considered.

Quantum Electronics•Dec 31, 1995•0 citations

Regeneration of optical signals by fiber logic elements operating through stimulated Raman scattering and development of fiber optic memory

Vladimir I. Belotitskii, Eugenii A. Kuzin, Mikhail P. Petrov +1 more

For the first time an all-optical fiber recirculating loop memory with a long storage time is demonstrated experimentally. Information is stored in the memory by recirculating optical pulses through a closed fiber loop employing all-optical repeaters operating via the stimulated Raman scattering (SRS) effect. The time during which information storage was observed was 10 min. The number of round trips through the loop was more than 100 million.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jun 28, 1993•0 citations

Design of an optical bit memory based on SRS slow light in SOI waveguide

Majid Ferdosian, Hassan Kaatuzian, Hossein Shokri Kojori

This paper presents a new model for an absorptive-dispersive optical bit memory using stimulated Raman scattering slow-light (SRS). The structure of our model is developed in a low loss silicon-on-insulator (SOI) waveguide based on Stimulated Raman Scattering (SRS). Waveguide has two parts, Raman cell and feedback pass. This model functions as a memory bit and can store an optical pulse by generating a pulse train in the output. Also by using a p-i-n diode structure in Raman cell, the delay time between OB output pulses can be tuned through changing the bias voltage.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•May 21, 2011•0 citations

Demonstration of over 100 million round trips in recirculating fibre loop with all-optical regeneration

Vladimir I. Belotitskii, Eugenii A. Kuzin, M. P. Petrov +1 more

More than 100 million round trips of 100ps optical pulses with a pulse repetition frequency of 100 MHz through a fibre recirculating loop are demonstrated. The signal is regenerated by a NOR gate operating via the SRS effect. The recirculating time is more than 10min. This indicates that such a loop can be used to develop an all-optical memory with a long storage time.

Electronics Letters•Jan 7, 1993•31 citations

Physical Nature of “Slow Light” in Stimulated Brillouin Scattering

I. Valeri, Gregory Robert, E. Nadezhda

Frontiers in Guided Wave Optics and Optoelectronics 84 absorption is much too high to render the group effect useful.An exciting breakthrough happened in the early nineties when it was shown that group velocities of few tens of meters per second were possible with nonlinear resonance interactions (Hau et al., 1999).Two important features of nonlinear resonances make this possible: substantially reduced absorption, or even amplification, of radiation at a resonance, and sharpness of such resonances; the sharper a resonance, the higher dn/dω and so the stronger the enhancement of group index, and hence the greater the pulse is delayed.Widely ranging applications for slow light have been proposed, of which those for telecommunication systems and devices (optical delay lines, optical buffers, optical equalizers and signal processors) are currently of most interest (Gauthier, 2005).The essential demand of such devices is compatibility with existing telecommunication systems, that is they must be of wide enough bandwidth (≥10 GHz) and able to be integrated seamlessly into such systems.Of the various nonlinear resonance mechanisms and media, which allow sufficiently long induced delays, stimulated Brillouin and Raman scattering (SBS and SRS) in optical fiber are deemed to be among the best candidates.Currently SBS is the most actively investigated and many experimental and theoretical papers on pulse delaying via SBS in optical fiber have been published in the last few years, see the review paper (Thevenaz, 2008) and references therein.In this process the pulse to be delayed is a frequency down-shifted (Stokes) pulse.This is transmitted through an optical fiber through which continuous wave (CW) pump radiation is sent in the opposite direction to prime the delay process.It is supposed that the Stokes pulse is amplified by parametric coupling with the pump wave and a material (acoustic) wave in the medium (Kroll, 1965), and the amplification is characterised by a resonant-type gain profile.The dispersion of refractive index associated with this profile (which is similar to that in Fig. 1) can then be used to increase the group index for optical pulses at the Stokes frequency (Zeldovich, 1972).Along with obvious device compatibility, there are several other advantages of the SL via SBS approach for optical communications systems: slow-light resonance can be created at any wavelength by changing the pump wavelength; use of optical fibre allows for long interaction lengths and thus low powers for the pump radiation, the process runs at room temperature, it uses off the shelf telecom equipment, and SBS works in the entire transparency range of fibers and in all types of fiber.Currently a main obstacle to applications of this approach is the narrow SBS gain spectral bandwidth, (Thevenaz, 2008), which is typically ≈ 120-200 MHz in silica fiber in the spectral range of telecom optical radiation (~1.3-1.6 μm) (Agrawal, 2006).This chapter reviews our ongoing work on the physical mechanisms that give rise to pulse delay in SBS.In section 2 the theoretical background of the SBS phenomenon is given and the main working equations describing this nonlinear interaction are presented.In section 3 ways by which the SBS spectral bandwidth may be increased are addressed.Waveguide induced spectral broadening of SBS in optical fibre is considered as a means of increasing the bandwidth to the multi-GHz range.An alternative way widely discussed in the literature, (Thevenaz, 2008), is based on spectral broadening of the pump radiation.However it is shown through analytic analysis of the SBS equations converted to the frequency domain that pump radiation broadening by any reasonable amount has only a negligible effect on increasing the SBS bandwidth.Importantly in this section we show that, irrespective of the nature of the broadening considered, the SBS gain bandwidth remains www.intechopen.

InTech eBooks•Feb 1, 2010•0 citations
We discuss the principles of development of optical logic elements using stimulated scattering in fibers.,Theoretical estimates show that it ip possilAe to movide a pulse repetition rate of 10 12 pule/s, pump pulse energy of 10 -l2 - 10 -13 J/μ 2 , and signal pulse energy of 10 -15 J/)μm 2 . Attention is focussed on the SRS-invertor and possibility of its usage for development of generators of optical pulse sequencies and fiber-optic memories.
The possibility of providing long-term storage of a binary sequence of pulses circulating in a fiber loop is discussed. The regeneration of the sequence is achieved by a fiber logic gate based on stimulated Raman scattering. Estimations show that a possible pulse repetition rate of 1010 Hz for the stimulated-Raman-scattering gate operation can be expected for an average pump power of 1 W. The circulation of the binary sequence of 100-ps pulses was observed during 10 min in a loop 870 m long. It corresponds to more than 106 round trips around the loop.
The feasibility of constructing an all-optical dynamic memory based on stimulated Raman scattering (SRS) in a fibre waveguide is discussed. A possible use of an SRS inverter for regeneration of optical signals is considered. Theoretical and experimental investigations are reported of the functional properties of an SRS inverter. The construction and investigation of a prototype all-optical fibre memory with an SRS inverter are described. The repetition frequency of the optical pulses along a fibre loop is 100 MHz and the loop capacity is 500 bits. Pulse circulation is reported over a period of 10 min at an average pump power of 2 W. The response time and the energy requirements of devices with an SRS inverter, and ways of improving their characteristics are considered.
This paper presents a new model for an absorptive-dispersive optical bit memory using stimulated Raman scattering slow-light (SRS). The structure of our model is developed in a low loss silicon-on-insulator (SOI) waveguide based on Stimulated Raman Scattering (SRS). Waveguide has two parts, Raman cell and feedback pass. This model functions as a memory bit and can store an optical pulse by generating a pulse train in the output. Also by using a p-i-n diode structure in Raman cell, the delay time between OB output pulses can be tuned through changing the bias voltage.
Frontiers in Guided Wave Optics and Optoelectronics 84 absorption is much too high to render the group effect useful.An exciting breakthrough happened in the early nineties when it was shown that group velocities of few tens of meters per second were possible with nonlinear resonance interactions (Hau et al., 1999).Two important features of nonlinear resonances make this possible: substantially reduced absorption, or even amplification, of radiation at a resonance, and sharpness of such resonances; the sharper a resonance, the higher dn/dω and so the stronger the enhancement of group index, and hence the greater the pulse is delayed.Widely ranging applications for slow light have been proposed, of which those for telecommunication systems and devices (optical delay lines, optical buffers, optical equalizers and signal processors) are currently of most interest (Gauthier, 2005).The essential demand of such devices is compatibility with existing telecommunication systems, that is they must be of wide enough bandwidth (≥10 GHz) and able to be integrated seamlessly into such systems.Of the various nonlinear resonance mechanisms and media, which allow sufficiently long induced delays, stimulated Brillouin and Raman scattering (SBS and SRS) in optical fiber are deemed to be among the best candidates.Currently SBS is the most actively investigated and many experimental and theoretical papers on pulse delaying via SBS in optical fiber have been published in the last few years, see the review paper (Thevenaz, 2008) and references therein.In this process the pulse to be delayed is a frequency down-shifted (Stokes) pulse.This is transmitted through an optical fiber through which continuous wave (CW) pump radiation is sent in the opposite direction to prime the delay process.It is supposed that the Stokes pulse is amplified by parametric coupling with the pump wave and a material (acoustic) wave in the medium (Kroll, 1965), and the amplification is characterised by a resonant-type gain profile.The dispersion of refractive index associated with this profile (which is similar to that in Fig. 1) can then be used to increase the group index for optical pulses at the Stokes frequency (Zeldovich, 1972).Along with obvious device compatibility, there are several other advantages of the SL via SBS approach for optical communications systems: slow-light resonance can be created at any wavelength by changing the pump wavelength; use of optical fibre allows for long interaction lengths and thus low powers for the pump radiation, the process runs at room temperature, it uses off the shelf telecom equipment, and SBS works in the entire transparency range of fibers and in all types of fiber.Currently a main obstacle to applications of this approach is the narrow SBS gain spectral bandwidth, (Thevenaz, 2008), which is typically ≈ 120-200 MHz in silica fiber in the spectral range of telecom optical radiation (~1.3-1.6 μm) (Agrawal, 2006).This chapter reviews our ongoing work on the physical mechanisms that give rise to pulse delay in SBS.In section 2 the theoretical background of the SBS phenomenon is given and the main working equations describing this nonlinear interaction are presented.In section 3 ways by which the SBS spectral bandwidth may be increased are addressed.Waveguide induced spectral broadening of SBS in optical fibre is considered as a means of increasing the bandwidth to the multi-GHz range.An alternative way widely discussed in the literature, (Thevenaz, 2008), is based on spectral broadening of the pump radiation.However it is shown through analytic analysis of the SBS equations converted to the frequency domain that pump radiation broadening by any reasonable amount has only a negligible effect on increasing the SBS bandwidth.Importantly in this section we show that, irrespective of the nature of the broadening considered, the SBS gain bandwidth remains www.intechopen.