Abstract

Spectral switching is now a well-known phenomenon. Several research groups have studied it theoretically and experimentally for different optical systems. Recently, its potential applications have been demonstrated for information encoding and transmission in free space. In this paper we report experimental observations in the far field for spectral switching of polychromatic light passing through an astigmatic aperture lens. An information encoding scheme, a free-space optical link, and related boundary conditions are studied in detail. In addition, on the basis of experimental and theoretical studies carried out so far for spectral switching, we explore possibilities of information transmission in free space and analyze experimental limitations of spectral-switching-based free-space optical communication.

© 2008 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. J. Pu, H. Zhang, and S. Nemoto, “Spectral shifts and spectral switches of partially coherent light passing through an aperture,” Opt. Commun. 162, 57-63 (1999).
    [CrossRef]
  2. J. Pu and S. Nemoto, “Spectral shifts and spectral switches in diffraction of partially coherent light by a circular aperture,” IEEE J. Quantum Electron. 36, 1407-1411 (2000).
    [CrossRef]
  3. L. Pan and B. Lu, “The spectral switch of partially coherent light in Young's experiment,” IEEE J. Quantum Electron. 37, 1377-1381 (2001).
    [CrossRef]
  4. J. Pu and S. Nemoto, “Spectral changes and 1×N spectral switches in the diffraction of partially coherent light by an aperture,” J. Opt. Soc. Am. A 19, 339-344 (2002).
    [CrossRef]
  5. J. T. Foley and E. Wolf, “Phenomenon of spectral switches as a new effect in singular optics with polychromatic light,” J. Opt. Soc. Am. A 19, 2510-2516 (2002).
    [CrossRef]
  6. H. C. Kandpal, “Experimental observation of the phenomenon of spectral switch” J. Opt. A, Pure Appl. Opt. 3, 296-299 (2001).
    [CrossRef]
  7. H. C. Kandpal, S. Anand, and J. S. Vaishya, “Experimental observation of the phenomenon of spectral switching for a class of partially coherent light,” IEEE J. Quantum Electron. 38, 336-339 (2002).
    [CrossRef]
  8. S. Anand, B. K. Yadav, and H. C. Kandpal, “Experimental study of the phenomenon of 1×N spectral switch due to diffraction of partially coherent light,” J. Opt. Soc. Am. A 19, 2223-2228 (2002).
    [CrossRef]
  9. B. K. Yadav, S. A. M. Rizvi, and H. C. Kandpal, “Experimental observation of spectral changes of partially coherent light in Young's experiment,” J. Opt. A, Pure Appl. Opt. 8, 72-76 (2006).
    [CrossRef]
  10. M. M. Brundavanam, N. K. Viswanathan, and N. R. Desai, “Spectral anomalies due to temporal correlation in a white-light interferometer,” Opt. Lett. 32, 2279-2281 (2007).
    [CrossRef] [PubMed]
  11. J. Pu, C. Cai, and S. Nemoto, “Spectral anomalies in Young's double-slit interference experiment,” Opt. Express 12, 5131-5139 (2004).
    [CrossRef] [PubMed]
  12. B. K. Yadav, S. A. M. Rizvi, S. Raman, R. Mehrotra, and H. C. Kandpal, “Information encoding by spectral anamolies of spatially coherent light diffracted by an annular aperture,” Opt. Commun. 269, 253-260 (2007).
    [CrossRef]
  13. B. K. Yadav, N. S. Bisht, R. Mehrotra, and H. C. Kandpal, “Diffraction-induced spectral anomalies for information encoding and information hiding--possibilities and limitations,” Opt. Commun. 277, 24-32 (2007).
    [CrossRef]
  14. L. Pan and B. Lu, “Spectral switches of polychromatic Gaussian beams passing through an astigmatic aperture lens,” Opt. Commun. 234, 13-22 (2004).
    [CrossRef]
  15. J. Pu, C. Cai, and S. Nemoto, “Spectral switches of partially coherent light focused by a filter-lens system with chromatic aberration,” J. Opt. Soc. Am. A 21, 994-999 (2004).
    [CrossRef]
  16. X. Hu and J. Pu, “The effect of spherical aberration on singularities and spectral changes of focused beams,” New J. Phys. 8, 93 (2006).
    [CrossRef]
  17. S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
    [CrossRef]
  18. E. Wolf, “Invariance of the spectrum of light on propagation,” Phys. Rev. Lett. 56, 1370-1372 (1986).
    [CrossRef] [PubMed]
  19. G. Gbur, T. D. Visser, and E. Wolf, “Anomalous behavior of spectra near phase singularities of focused waves,” Phys. Rev. Lett. 88, 013901 (2001).
    [CrossRef]
  20. S. A. Ponomarenko and E. Wolf, “Spectral anomalies in a Fraunhofer diffraction pattern,” Opt. Lett. 27, 1211-1213 (2002).
    [CrossRef]
  21. H. Zhang, G. Wu, and H. Guo, “Spectral anomalies of focused hollow Gaussian beams at the geometrical focal plane,” Opt. Commun. 281, 4169-4172 (2008).
    [CrossRef]
  22. Y. Cai, X. Lu, and Q. Lin, “Hollow Gaussian beams and their propagation properties,” Opt. Lett. 28, 1084-1086 (2003).
    [CrossRef] [PubMed]
  23. H. T. Eyyuboglu, Y. Cai, and B. K. Baykal, “Spectral shifts of general beams in turbulent media,” J. Opt. A, Pure Appl. Opt. 10, 015005 (2008).
    [CrossRef]
  24. T. Yatagai, S. Kawai, and H. Huang, “Optical computing and interconnects,” Proc. IEEE 84, 828-852 (1996).
    [CrossRef]
  25. Dominic O'Brien, “Free-space optical links for broadband wireless communication,” http://www.acreo.se/upload/Publications/Proceedings/OE03/FREESPACE-OE003.pdf.
  26. J. Turunen, E. Tervonen, and A. T. Friberg, “Acousto-optic control and modulation of optical coherence by electronically synthesized holographic grating,” J. Appl. Phys. 67, 49-59 (1990).
    [CrossRef]

2008 (3)

S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
[CrossRef]

H. Zhang, G. Wu, and H. Guo, “Spectral anomalies of focused hollow Gaussian beams at the geometrical focal plane,” Opt. Commun. 281, 4169-4172 (2008).
[CrossRef]

H. T. Eyyuboglu, Y. Cai, and B. K. Baykal, “Spectral shifts of general beams in turbulent media,” J. Opt. A, Pure Appl. Opt. 10, 015005 (2008).
[CrossRef]

2007 (3)

B. K. Yadav, S. A. M. Rizvi, S. Raman, R. Mehrotra, and H. C. Kandpal, “Information encoding by spectral anamolies of spatially coherent light diffracted by an annular aperture,” Opt. Commun. 269, 253-260 (2007).
[CrossRef]

B. K. Yadav, N. S. Bisht, R. Mehrotra, and H. C. Kandpal, “Diffraction-induced spectral anomalies for information encoding and information hiding--possibilities and limitations,” Opt. Commun. 277, 24-32 (2007).
[CrossRef]

M. M. Brundavanam, N. K. Viswanathan, and N. R. Desai, “Spectral anomalies due to temporal correlation in a white-light interferometer,” Opt. Lett. 32, 2279-2281 (2007).
[CrossRef] [PubMed]

2006 (2)

B. K. Yadav, S. A. M. Rizvi, and H. C. Kandpal, “Experimental observation of spectral changes of partially coherent light in Young's experiment,” J. Opt. A, Pure Appl. Opt. 8, 72-76 (2006).
[CrossRef]

X. Hu and J. Pu, “The effect of spherical aberration on singularities and spectral changes of focused beams,” New J. Phys. 8, 93 (2006).
[CrossRef]

2004 (3)

2003 (1)

2002 (5)

2001 (3)

L. Pan and B. Lu, “The spectral switch of partially coherent light in Young's experiment,” IEEE J. Quantum Electron. 37, 1377-1381 (2001).
[CrossRef]

H. C. Kandpal, “Experimental observation of the phenomenon of spectral switch” J. Opt. A, Pure Appl. Opt. 3, 296-299 (2001).
[CrossRef]

G. Gbur, T. D. Visser, and E. Wolf, “Anomalous behavior of spectra near phase singularities of focused waves,” Phys. Rev. Lett. 88, 013901 (2001).
[CrossRef]

2000 (1)

J. Pu and S. Nemoto, “Spectral shifts and spectral switches in diffraction of partially coherent light by a circular aperture,” IEEE J. Quantum Electron. 36, 1407-1411 (2000).
[CrossRef]

1999 (1)

J. Pu, H. Zhang, and S. Nemoto, “Spectral shifts and spectral switches of partially coherent light passing through an aperture,” Opt. Commun. 162, 57-63 (1999).
[CrossRef]

1996 (1)

T. Yatagai, S. Kawai, and H. Huang, “Optical computing and interconnects,” Proc. IEEE 84, 828-852 (1996).
[CrossRef]

1990 (1)

J. Turunen, E. Tervonen, and A. T. Friberg, “Acousto-optic control and modulation of optical coherence by electronically synthesized holographic grating,” J. Appl. Phys. 67, 49-59 (1990).
[CrossRef]

1986 (1)

E. Wolf, “Invariance of the spectrum of light on propagation,” Phys. Rev. Lett. 56, 1370-1372 (1986).
[CrossRef] [PubMed]

Anand, S.

H. C. Kandpal, S. Anand, and J. S. Vaishya, “Experimental observation of the phenomenon of spectral switching for a class of partially coherent light,” IEEE J. Quantum Electron. 38, 336-339 (2002).
[CrossRef]

S. Anand, B. K. Yadav, and H. C. Kandpal, “Experimental study of the phenomenon of 1×N spectral switch due to diffraction of partially coherent light,” J. Opt. Soc. Am. A 19, 2223-2228 (2002).
[CrossRef]

Baykal, B. K.

H. T. Eyyuboglu, Y. Cai, and B. K. Baykal, “Spectral shifts of general beams in turbulent media,” J. Opt. A, Pure Appl. Opt. 10, 015005 (2008).
[CrossRef]

Bisht, N. S.

S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
[CrossRef]

B. K. Yadav, N. S. Bisht, R. Mehrotra, and H. C. Kandpal, “Diffraction-induced spectral anomalies for information encoding and information hiding--possibilities and limitations,” Opt. Commun. 277, 24-32 (2007).
[CrossRef]

Brundavanam, M. M.

Cai, C.

Cai, Y.

H. T. Eyyuboglu, Y. Cai, and B. K. Baykal, “Spectral shifts of general beams in turbulent media,” J. Opt. A, Pure Appl. Opt. 10, 015005 (2008).
[CrossRef]

Y. Cai, X. Lu, and Q. Lin, “Hollow Gaussian beams and their propagation properties,” Opt. Lett. 28, 1084-1086 (2003).
[CrossRef] [PubMed]

Desai, N. R.

Eyyuboglu, H. T.

H. T. Eyyuboglu, Y. Cai, and B. K. Baykal, “Spectral shifts of general beams in turbulent media,” J. Opt. A, Pure Appl. Opt. 10, 015005 (2008).
[CrossRef]

Foley, J. T.

Friberg, A. T.

J. Turunen, E. Tervonen, and A. T. Friberg, “Acousto-optic control and modulation of optical coherence by electronically synthesized holographic grating,” J. Appl. Phys. 67, 49-59 (1990).
[CrossRef]

Gbur, G.

G. Gbur, T. D. Visser, and E. Wolf, “Anomalous behavior of spectra near phase singularities of focused waves,” Phys. Rev. Lett. 88, 013901 (2001).
[CrossRef]

Guo, H.

H. Zhang, G. Wu, and H. Guo, “Spectral anomalies of focused hollow Gaussian beams at the geometrical focal plane,” Opt. Commun. 281, 4169-4172 (2008).
[CrossRef]

Hu, X.

X. Hu and J. Pu, “The effect of spherical aberration on singularities and spectral changes of focused beams,” New J. Phys. 8, 93 (2006).
[CrossRef]

Huang, H.

T. Yatagai, S. Kawai, and H. Huang, “Optical computing and interconnects,” Proc. IEEE 84, 828-852 (1996).
[CrossRef]

Husain, M.

S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
[CrossRef]

Kandpal, H. C.

S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
[CrossRef]

B. K. Yadav, N. S. Bisht, R. Mehrotra, and H. C. Kandpal, “Diffraction-induced spectral anomalies for information encoding and information hiding--possibilities and limitations,” Opt. Commun. 277, 24-32 (2007).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, S. Raman, R. Mehrotra, and H. C. Kandpal, “Information encoding by spectral anamolies of spatially coherent light diffracted by an annular aperture,” Opt. Commun. 269, 253-260 (2007).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, and H. C. Kandpal, “Experimental observation of spectral changes of partially coherent light in Young's experiment,” J. Opt. A, Pure Appl. Opt. 8, 72-76 (2006).
[CrossRef]

S. Anand, B. K. Yadav, and H. C. Kandpal, “Experimental study of the phenomenon of 1×N spectral switch due to diffraction of partially coherent light,” J. Opt. Soc. Am. A 19, 2223-2228 (2002).
[CrossRef]

H. C. Kandpal, S. Anand, and J. S. Vaishya, “Experimental observation of the phenomenon of spectral switching for a class of partially coherent light,” IEEE J. Quantum Electron. 38, 336-339 (2002).
[CrossRef]

H. C. Kandpal, “Experimental observation of the phenomenon of spectral switch” J. Opt. A, Pure Appl. Opt. 3, 296-299 (2001).
[CrossRef]

Kawai, S.

T. Yatagai, S. Kawai, and H. Huang, “Optical computing and interconnects,” Proc. IEEE 84, 828-852 (1996).
[CrossRef]

Lin, Q.

Lu, B.

L. Pan and B. Lu, “Spectral switches of polychromatic Gaussian beams passing through an astigmatic aperture lens,” Opt. Commun. 234, 13-22 (2004).
[CrossRef]

L. Pan and B. Lu, “The spectral switch of partially coherent light in Young's experiment,” IEEE J. Quantum Electron. 37, 1377-1381 (2001).
[CrossRef]

Lu, X.

Mehrotra, R.

S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
[CrossRef]

B. K. Yadav, N. S. Bisht, R. Mehrotra, and H. C. Kandpal, “Diffraction-induced spectral anomalies for information encoding and information hiding--possibilities and limitations,” Opt. Commun. 277, 24-32 (2007).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, S. Raman, R. Mehrotra, and H. C. Kandpal, “Information encoding by spectral anamolies of spatially coherent light diffracted by an annular aperture,” Opt. Commun. 269, 253-260 (2007).
[CrossRef]

Nemoto, S.

O'Brien, Dominic

Dominic O'Brien, “Free-space optical links for broadband wireless communication,” http://www.acreo.se/upload/Publications/Proceedings/OE03/FREESPACE-OE003.pdf.

Pan, L.

L. Pan and B. Lu, “Spectral switches of polychromatic Gaussian beams passing through an astigmatic aperture lens,” Opt. Commun. 234, 13-22 (2004).
[CrossRef]

L. Pan and B. Lu, “The spectral switch of partially coherent light in Young's experiment,” IEEE J. Quantum Electron. 37, 1377-1381 (2001).
[CrossRef]

Ponomarenko, S. A.

Pu, J.

X. Hu and J. Pu, “The effect of spherical aberration on singularities and spectral changes of focused beams,” New J. Phys. 8, 93 (2006).
[CrossRef]

J. Pu, C. Cai, and S. Nemoto, “Spectral anomalies in Young's double-slit interference experiment,” Opt. Express 12, 5131-5139 (2004).
[CrossRef] [PubMed]

J. Pu, C. Cai, and S. Nemoto, “Spectral switches of partially coherent light focused by a filter-lens system with chromatic aberration,” J. Opt. Soc. Am. A 21, 994-999 (2004).
[CrossRef]

J. Pu and S. Nemoto, “Spectral changes and 1×N spectral switches in the diffraction of partially coherent light by an aperture,” J. Opt. Soc. Am. A 19, 339-344 (2002).
[CrossRef]

J. Pu and S. Nemoto, “Spectral shifts and spectral switches in diffraction of partially coherent light by a circular aperture,” IEEE J. Quantum Electron. 36, 1407-1411 (2000).
[CrossRef]

J. Pu, H. Zhang, and S. Nemoto, “Spectral shifts and spectral switches of partially coherent light passing through an aperture,” Opt. Commun. 162, 57-63 (1999).
[CrossRef]

Raman, S.

S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, S. Raman, R. Mehrotra, and H. C. Kandpal, “Information encoding by spectral anamolies of spatially coherent light diffracted by an annular aperture,” Opt. Commun. 269, 253-260 (2007).
[CrossRef]

Rizvi, S. A. M.

B. K. Yadav, S. A. M. Rizvi, S. Raman, R. Mehrotra, and H. C. Kandpal, “Information encoding by spectral anamolies of spatially coherent light diffracted by an annular aperture,” Opt. Commun. 269, 253-260 (2007).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, and H. C. Kandpal, “Experimental observation of spectral changes of partially coherent light in Young's experiment,” J. Opt. A, Pure Appl. Opt. 8, 72-76 (2006).
[CrossRef]

Tervonen, E.

J. Turunen, E. Tervonen, and A. T. Friberg, “Acousto-optic control and modulation of optical coherence by electronically synthesized holographic grating,” J. Appl. Phys. 67, 49-59 (1990).
[CrossRef]

Turunen, J.

J. Turunen, E. Tervonen, and A. T. Friberg, “Acousto-optic control and modulation of optical coherence by electronically synthesized holographic grating,” J. Appl. Phys. 67, 49-59 (1990).
[CrossRef]

Vaishya, J. S.

H. C. Kandpal, S. Anand, and J. S. Vaishya, “Experimental observation of the phenomenon of spectral switching for a class of partially coherent light,” IEEE J. Quantum Electron. 38, 336-339 (2002).
[CrossRef]

Visser, T. D.

G. Gbur, T. D. Visser, and E. Wolf, “Anomalous behavior of spectra near phase singularities of focused waves,” Phys. Rev. Lett. 88, 013901 (2001).
[CrossRef]

Viswanathan, N. K.

Wolf, E.

S. A. Ponomarenko and E. Wolf, “Spectral anomalies in a Fraunhofer diffraction pattern,” Opt. Lett. 27, 1211-1213 (2002).
[CrossRef]

J. T. Foley and E. Wolf, “Phenomenon of spectral switches as a new effect in singular optics with polychromatic light,” J. Opt. Soc. Am. A 19, 2510-2516 (2002).
[CrossRef]

G. Gbur, T. D. Visser, and E. Wolf, “Anomalous behavior of spectra near phase singularities of focused waves,” Phys. Rev. Lett. 88, 013901 (2001).
[CrossRef]

E. Wolf, “Invariance of the spectrum of light on propagation,” Phys. Rev. Lett. 56, 1370-1372 (1986).
[CrossRef] [PubMed]

Wu, G.

H. Zhang, G. Wu, and H. Guo, “Spectral anomalies of focused hollow Gaussian beams at the geometrical focal plane,” Opt. Commun. 281, 4169-4172 (2008).
[CrossRef]

Yadav, B. K.

S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
[CrossRef]

B. K. Yadav, N. S. Bisht, R. Mehrotra, and H. C. Kandpal, “Diffraction-induced spectral anomalies for information encoding and information hiding--possibilities and limitations,” Opt. Commun. 277, 24-32 (2007).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, S. Raman, R. Mehrotra, and H. C. Kandpal, “Information encoding by spectral anamolies of spatially coherent light diffracted by an annular aperture,” Opt. Commun. 269, 253-260 (2007).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, and H. C. Kandpal, “Experimental observation of spectral changes of partially coherent light in Young's experiment,” J. Opt. A, Pure Appl. Opt. 8, 72-76 (2006).
[CrossRef]

S. Anand, B. K. Yadav, and H. C. Kandpal, “Experimental study of the phenomenon of 1×N spectral switch due to diffraction of partially coherent light,” J. Opt. Soc. Am. A 19, 2223-2228 (2002).
[CrossRef]

Yatagai, T.

T. Yatagai, S. Kawai, and H. Huang, “Optical computing and interconnects,” Proc. IEEE 84, 828-852 (1996).
[CrossRef]

Zhang, H.

H. Zhang, G. Wu, and H. Guo, “Spectral anomalies of focused hollow Gaussian beams at the geometrical focal plane,” Opt. Commun. 281, 4169-4172 (2008).
[CrossRef]

J. Pu, H. Zhang, and S. Nemoto, “Spectral shifts and spectral switches of partially coherent light passing through an aperture,” Opt. Commun. 162, 57-63 (1999).
[CrossRef]

IEEE J. Quantum Electron. (3)

H. C. Kandpal, S. Anand, and J. S. Vaishya, “Experimental observation of the phenomenon of spectral switching for a class of partially coherent light,” IEEE J. Quantum Electron. 38, 336-339 (2002).
[CrossRef]

J. Pu and S. Nemoto, “Spectral shifts and spectral switches in diffraction of partially coherent light by a circular aperture,” IEEE J. Quantum Electron. 36, 1407-1411 (2000).
[CrossRef]

L. Pan and B. Lu, “The spectral switch of partially coherent light in Young's experiment,” IEEE J. Quantum Electron. 37, 1377-1381 (2001).
[CrossRef]

J. Appl. Phys. (1)

J. Turunen, E. Tervonen, and A. T. Friberg, “Acousto-optic control and modulation of optical coherence by electronically synthesized holographic grating,” J. Appl. Phys. 67, 49-59 (1990).
[CrossRef]

J. Mod. Opt. (1)

S. Raman, N. S. Bisht, B. K. Yadav, R. Mehrotra, M. Husain, and H. C. Kandpal, “Experimental observation of the effect of astigmatic aperture lens on the spectral switches of polychromatic Gaussian beam,” J. Mod. Opt. 55, 1629-1638 (2008).
[CrossRef]

J. Opt. A, Pure Appl. Opt. (3)

H. T. Eyyuboglu, Y. Cai, and B. K. Baykal, “Spectral shifts of general beams in turbulent media,” J. Opt. A, Pure Appl. Opt. 10, 015005 (2008).
[CrossRef]

H. C. Kandpal, “Experimental observation of the phenomenon of spectral switch” J. Opt. A, Pure Appl. Opt. 3, 296-299 (2001).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, and H. C. Kandpal, “Experimental observation of spectral changes of partially coherent light in Young's experiment,” J. Opt. A, Pure Appl. Opt. 8, 72-76 (2006).
[CrossRef]

J. Opt. Soc. Am. A (4)

New J. Phys. (1)

X. Hu and J. Pu, “The effect of spherical aberration on singularities and spectral changes of focused beams,” New J. Phys. 8, 93 (2006).
[CrossRef]

Opt. Commun. (5)

J. Pu, H. Zhang, and S. Nemoto, “Spectral shifts and spectral switches of partially coherent light passing through an aperture,” Opt. Commun. 162, 57-63 (1999).
[CrossRef]

B. K. Yadav, S. A. M. Rizvi, S. Raman, R. Mehrotra, and H. C. Kandpal, “Information encoding by spectral anamolies of spatially coherent light diffracted by an annular aperture,” Opt. Commun. 269, 253-260 (2007).
[CrossRef]

B. K. Yadav, N. S. Bisht, R. Mehrotra, and H. C. Kandpal, “Diffraction-induced spectral anomalies for information encoding and information hiding--possibilities and limitations,” Opt. Commun. 277, 24-32 (2007).
[CrossRef]

L. Pan and B. Lu, “Spectral switches of polychromatic Gaussian beams passing through an astigmatic aperture lens,” Opt. Commun. 234, 13-22 (2004).
[CrossRef]

H. Zhang, G. Wu, and H. Guo, “Spectral anomalies of focused hollow Gaussian beams at the geometrical focal plane,” Opt. Commun. 281, 4169-4172 (2008).
[CrossRef]

Opt. Express (1)

Opt. Lett. (3)

Phys. Rev. Lett. (2)

E. Wolf, “Invariance of the spectrum of light on propagation,” Phys. Rev. Lett. 56, 1370-1372 (1986).
[CrossRef] [PubMed]

G. Gbur, T. D. Visser, and E. Wolf, “Anomalous behavior of spectra near phase singularities of focused waves,” Phys. Rev. Lett. 88, 013901 (2001).
[CrossRef]

Proc. IEEE (1)

T. Yatagai, S. Kawai, and H. Huang, “Optical computing and interconnects,” Proc. IEEE 84, 828-852 (1996).
[CrossRef]

Other (1)

Dominic O'Brien, “Free-space optical links for broadband wireless communication,” http://www.acreo.se/upload/Publications/Proceedings/OE03/FREESPACE-OE003.pdf.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (8)

Fig. 1
Fig. 1

Schematic diagram of experimental setup.

Fig. 2
Fig. 2

Experimentally observed spectral switching at z = 5 m : (a) blueshift, (b) TPD spectrum in critical direction, and (c) redshift.

Fig. 3
Fig. 3

Simulated curves for experimental parameters to understand the spectral evolution and to determine boundary conditions for (a) blueshift, (b) TPD spectrum, (c) and redshift.

Fig. 4
Fig. 4

Optical field propagation in far field after diffraction pattern.

Fig. 5
Fig. 5

Schematic diagram to illustrate the internal structure of a free-space optical link. It shows longitudinal and transverse cross sections of the upper part of the first dark ring. O indicates the observation plane.

Fig. 6
Fig. 6

Free-space optical link through HGB between transmitter and receiver.

Fig. 7
Fig. 7

General communication model for spectral-switching-based free-space optical communication.

Fig. 8
Fig. 8

Concept of information encoding with spectral switching.

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

S ( u , v , Δ z , ω ) = S ( 0 ) ( ω ) M ( u , v , Δ z , ω ) ,
M ( u , v , Δ z , ω ) = M 1 ( u , Δ z , ω ) M 2 ( v , Δ z , ω ) ,
S ( 0 ) ω = exp [ ( ω ω 0 ) 2 2 σ 0 2 ] .

Metrics