Abstract

In this paper, we demonstrate a nonlinear optical device based on a fiber taper coated with a carbon nanotube (CNT)/polymer composite. Using this device, four wave mixing (FWM) based wavelength conversion of 10 Gb/s Non-return-to-zero signal is achieved. In addition, we investigate wavelength tuning, two photon absorption and estimate the effective nonlinear coefficient of the CNTs embedded in the tapered fiber to be 1816.8 W−1km−1.

© 2013 OSA

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  1. S. Iijima and T. Ichihashi, “Single shell carbon nanotubes of one nanometer diameter,” Nature 363(6430), 603–605 (1993).
    [Crossref]
  2. S. Yamashita, “A tutorial on nonlinear photonic applications of carbon nanotube and graphene,” J. Lightwave Technol. 30(4), 427–447 (2012).
    [Crossref]
  3. S. Y. Set, H. Yaguchi, M. Jablonski, Y. Tanaka, Y. Sakakibara, A. Rozhin, M. Tokumoto, H. Kataura, Y. Achiba, and K. Kikuchi, “A noise suppressing saturable absorber at 1550 nm based on carbon nanotube technology,” in Proceedings of Optical Fiber Communication Conference (OFC 2003), no.FL2, 2003.
  4. S. Y. Set, H. Yaguchi, Y. Tanaka, and M. Jablonski, “Ultrafast fiber pulsed lasers incorporating carbon nanotubes,” IEEE J. Sel. Top. Quantum Electron. 10(1), 137–146(2004).
    [Crossref]
  5. V. A. Margulis and T. A. Sizikova, “Theoretical study of third-order nonlinear optical response of semiconductor carbon nanotubes,” Physica B 245(2), 173–189 (1998).
    [Crossref]
  6. F. Shohda, Y. Hori, M. Nakazawa, J. Mata, and J. Tsukamoto, “131 fs, 33 MHz all-fiber soliton laser at 1.07 μm with a film-type SWNT saturable absorber coated on polyimide,” Opt. Express 18(11), 11223–11229 (2010).
    [Crossref]
  7. B. Xu, A. Martinez, S. Y. Set, C. S. Goh, and S. Yamashita, “Dissipative solitons in a dispersion mapped, carbon nanotubes-based figure of eight fiber laser,” PDP2–4, Opto Electronics and Communications Conference ’2012 (OECC’ 2012).
  8. A. Martinez and S. Yamashita, “Multi-Gigahertz repetition rate passively modelocked fiber lasers using carbon nanotubes,” Opt. Express 19(7), 6155–6163 (2011).
    [Crossref] [PubMed]
  9. K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
    [Crossref]
  10. T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
    [Crossref]
  11. Y. W. Song, S. Y. Set, and S. Yamashita, “Novel Kerr shutter using carbon nanotubes deposited onto a 5-cm D-shaped fiber,” in Proceedings of Conference on Lasers and Electro Optics (CLEO 2006), no.CMA4, May 2006.
  12. K. K. Chow and S. Yamashita, “Four-wave mixing in a single-walled carbon-nanotube-deposited D-shaped fiber and its application in tunable wavelength conversion,” Opt. Express 17(18), 15608–15613 (2009).
    [Crossref] [PubMed]
  13. B. Xu, A. Martinez, K. Fuse, and S. Yamashita, Generation of four wave mixing in graphene and carbon nanotubes optically deposited onto fiber ferrules,” no.CMAA6, CLEO’2011.
  14. B. Xu, A. Martinez, and S. Yamashita, “Mechanically exfoliated graphene for four wave-mixing based wavelength conversion,” IEEE Photon. Technol. Lett. 24(20), 1792–1794 (2012).
    [Crossref]
  15. G.P. Agrawal, Nonlinear Fiber Optics 3rd ed. (Academic, 2010).
  16. Y.-W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
    [Crossref]
  17. K. K. Chow, S. Yamashita, and S. Y. Set, “Four-wave-mixing-based wavelength conversion using a single-walled carbon-nanotube-deposited planar lightwave circuit waveguide,” Opt. Lett. 35(12), 2070–2072 (2010).
    [Crossref] [PubMed]
  18. K. Kashiwagi and S. Yamashita, “Deposition of carbon nanotubes around microfiber via evanascent light,” Opt. Express 17(20), 18364–18370 (2009).
    [Crossref] [PubMed]
  19. K. K. Chow, M. Tsuji, and S. Yamashita, “Single-walled carbon-nanotube-deposited tapered fiber for four-wave mixing based wavelength conversion,” Appl. Phys. Lett. 96(6), 061104 (2010).
    [Crossref]
  20. Y.-W. Song, K. Morimune, S. Y. Set, and S. Yamashita, “Polarization insensitive all-fiber mode-lockers functioned by carbon nanotubes deposited onto tapered fibers,” Appl. Phys. Lett. 90(2), 021101 (2007).
    [Crossref]
  21. A. Martinez, S. Uchida, Y.-W. Song, T. Ishigure, and S. Yamashita, “Fabrication of carbon nanotube-poly-methylmethacrylate composites for nonlinear photonic devices,” Opt. Express 16(15), 11337–11343 (2008).
    [Crossref]
  22. K. Kieu and M. Mansuripur, “Femtosecond laser pulse generation with a fiber taper embedded in carbon nanotube/polymer composite,” Opt. Lett. 32(15), 2242–2244 (2007).
    [Crossref] [PubMed]
  23. A. Martinez, M. Omura, M. Takiguchi, B. Xu, T. Kuga, T. Ishigure, and S. Yamashita, “Multi-solitons in a dispersion managed fiber laser using a carbon nanotube-coated taper fiber,” JTu5A, Nonlinear Photonics 2012.
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    [Crossref] [PubMed]
  25. S. Uchida, A. Martinez, Y.-W. Song, T. Ishigure, and S. Yamashita, “Carbon nanotube-doped polymer optical fiber,” Opt. Lett. 34(20), 3077–3079 (2009).
    [Crossref] [PubMed]

2012 (2)

B. Xu, A. Martinez, and S. Yamashita, “Mechanically exfoliated graphene for four wave-mixing based wavelength conversion,” IEEE Photon. Technol. Lett. 24(20), 1792–1794 (2012).
[Crossref]

S. Yamashita, “A tutorial on nonlinear photonic applications of carbon nanotube and graphene,” J. Lightwave Technol. 30(4), 427–447 (2012).
[Crossref]

2011 (2)

2010 (3)

2009 (4)

2008 (2)

A. Martinez, S. Uchida, Y.-W. Song, T. Ishigure, and S. Yamashita, “Fabrication of carbon nanotube-poly-methylmethacrylate composites for nonlinear photonic devices,” Opt. Express 16(15), 11337–11343 (2008).
[Crossref]

Y.-W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
[Crossref]

2007 (2)

Y.-W. Song, K. Morimune, S. Y. Set, and S. Yamashita, “Polarization insensitive all-fiber mode-lockers functioned by carbon nanotubes deposited onto tapered fibers,” Appl. Phys. Lett. 90(2), 021101 (2007).
[Crossref]

K. Kieu and M. Mansuripur, “Femtosecond laser pulse generation with a fiber taper embedded in carbon nanotube/polymer composite,” Opt. Lett. 32(15), 2242–2244 (2007).
[Crossref] [PubMed]

2006 (1)

K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
[Crossref]

2004 (1)

S. Y. Set, H. Yaguchi, Y. Tanaka, and M. Jablonski, “Ultrafast fiber pulsed lasers incorporating carbon nanotubes,” IEEE J. Sel. Top. Quantum Electron. 10(1), 137–146(2004).
[Crossref]

1998 (1)

V. A. Margulis and T. A. Sizikova, “Theoretical study of third-order nonlinear optical response of semiconductor carbon nanotubes,” Physica B 245(2), 173–189 (1998).
[Crossref]

1993 (1)

S. Iijima and T. Ichihashi, “Single shell carbon nanotubes of one nanometer diameter,” Nature 363(6430), 603–605 (1993).
[Crossref]

Bonaccorso, F.

T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
[Crossref]

Chow, K. K.

Ferrari, A. C.

T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
[Crossref]

Goh, C. S.

K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
[Crossref]

Hasan, T.

T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
[Crossref]

Hori, Y.

Ichihashi, T.

S. Iijima and T. Ichihashi, “Single shell carbon nanotubes of one nanometer diameter,” Nature 363(6430), 603–605 (1993).
[Crossref]

Iijima, S.

S. Iijima and T. Ichihashi, “Single shell carbon nanotubes of one nanometer diameter,” Nature 363(6430), 603–605 (1993).
[Crossref]

Ishigure, T.

Jablonski, M.

S. Y. Set, H. Yaguchi, Y. Tanaka, and M. Jablonski, “Ultrafast fiber pulsed lasers incorporating carbon nanotubes,” IEEE J. Sel. Top. Quantum Electron. 10(1), 137–146(2004).
[Crossref]

Kashiwagi, K.

K. Kashiwagi and S. Yamashita, “Deposition of carbon nanotubes around microfiber via evanascent light,” Opt. Express 17(20), 18364–18370 (2009).
[Crossref] [PubMed]

K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
[Crossref]

Kieu, K.

Kuga, T.

Mansuripur, M.

Margulis, V. A.

V. A. Margulis and T. A. Sizikova, “Theoretical study of third-order nonlinear optical response of semiconductor carbon nanotubes,” Physica B 245(2), 173–189 (1998).
[Crossref]

Martinez, A.

Maruyama, S.

Y.-W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
[Crossref]

Mata, J.

Morimune, K.

Y.-W. Song, K. Morimune, S. Y. Set, and S. Yamashita, “Polarization insensitive all-fiber mode-lockers functioned by carbon nanotubes deposited onto tapered fibers,” Appl. Phys. Lett. 90(2), 021101 (2007).
[Crossref]

Nakayama, K.

Nakazawa, M.

Nasu, Y.

K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
[Crossref]

Rozhin, A. G.

T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
[Crossref]

Set, S. Y.

K. K. Chow, S. Yamashita, and S. Y. Set, “Four-wave-mixing-based wavelength conversion using a single-walled carbon-nanotube-deposited planar lightwave circuit waveguide,” Opt. Lett. 35(12), 2070–2072 (2010).
[Crossref] [PubMed]

Y.-W. Song, K. Morimune, S. Y. Set, and S. Yamashita, “Polarization insensitive all-fiber mode-lockers functioned by carbon nanotubes deposited onto tapered fibers,” Appl. Phys. Lett. 90(2), 021101 (2007).
[Crossref]

K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
[Crossref]

S. Y. Set, H. Yaguchi, Y. Tanaka, and M. Jablonski, “Ultrafast fiber pulsed lasers incorporating carbon nanotubes,” IEEE J. Sel. Top. Quantum Electron. 10(1), 137–146(2004).
[Crossref]

Shohda, F.

Sizikova, T. A.

V. A. Margulis and T. A. Sizikova, “Theoretical study of third-order nonlinear optical response of semiconductor carbon nanotubes,” Physica B 245(2), 173–189 (1998).
[Crossref]

Song, Y.-W.

S. Uchida, A. Martinez, Y.-W. Song, T. Ishigure, and S. Yamashita, “Carbon nanotube-doped polymer optical fiber,” Opt. Lett. 34(20), 3077–3079 (2009).
[Crossref] [PubMed]

A. Martinez, S. Uchida, Y.-W. Song, T. Ishigure, and S. Yamashita, “Fabrication of carbon nanotube-poly-methylmethacrylate composites for nonlinear photonic devices,” Opt. Express 16(15), 11337–11343 (2008).
[Crossref]

Y.-W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
[Crossref]

Y.-W. Song, K. Morimune, S. Y. Set, and S. Yamashita, “Polarization insensitive all-fiber mode-lockers functioned by carbon nanotubes deposited onto tapered fibers,” Appl. Phys. Lett. 90(2), 021101 (2007).
[Crossref]

Sun, Z.

T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
[Crossref]

Takiguchi, M.

Tan, P.

T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
[Crossref]

Tanaka, Y.

S. Y. Set, H. Yaguchi, Y. Tanaka, and M. Jablonski, “Ultrafast fiber pulsed lasers incorporating carbon nanotubes,” IEEE J. Sel. Top. Quantum Electron. 10(1), 137–146(2004).
[Crossref]

Tsuji, M.

K. K. Chow, M. Tsuji, and S. Yamashita, “Single-walled carbon-nanotube-deposited tapered fiber for four-wave mixing based wavelength conversion,” Appl. Phys. Lett. 96(6), 061104 (2010).
[Crossref]

Tsukamoto, J.

Uchida, S.

Wang, F.

T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
[Crossref]

Xu, B.

B. Xu, A. Martinez, and S. Yamashita, “Mechanically exfoliated graphene for four wave-mixing based wavelength conversion,” IEEE Photon. Technol. Lett. 24(20), 1792–1794 (2012).
[Crossref]

Yaguchi, H.

K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
[Crossref]

S. Y. Set, H. Yaguchi, Y. Tanaka, and M. Jablonski, “Ultrafast fiber pulsed lasers incorporating carbon nanotubes,” IEEE J. Sel. Top. Quantum Electron. 10(1), 137–146(2004).
[Crossref]

Yamamoto, T.

Yamashita, S.

S. Yamashita, “A tutorial on nonlinear photonic applications of carbon nanotube and graphene,” J. Lightwave Technol. 30(4), 427–447 (2012).
[Crossref]

B. Xu, A. Martinez, and S. Yamashita, “Mechanically exfoliated graphene for four wave-mixing based wavelength conversion,” IEEE Photon. Technol. Lett. 24(20), 1792–1794 (2012).
[Crossref]

A. Martinez and S. Yamashita, “Multi-Gigahertz repetition rate passively modelocked fiber lasers using carbon nanotubes,” Opt. Express 19(7), 6155–6163 (2011).
[Crossref] [PubMed]

K. K. Chow, M. Tsuji, and S. Yamashita, “Single-walled carbon-nanotube-deposited tapered fiber for four-wave mixing based wavelength conversion,” Appl. Phys. Lett. 96(6), 061104 (2010).
[Crossref]

K. K. Chow, S. Yamashita, and S. Y. Set, “Four-wave-mixing-based wavelength conversion using a single-walled carbon-nanotube-deposited planar lightwave circuit waveguide,” Opt. Lett. 35(12), 2070–2072 (2010).
[Crossref] [PubMed]

K. Kashiwagi and S. Yamashita, “Deposition of carbon nanotubes around microfiber via evanascent light,” Opt. Express 17(20), 18364–18370 (2009).
[Crossref] [PubMed]

S. Uchida, A. Martinez, Y.-W. Song, T. Ishigure, and S. Yamashita, “Carbon nanotube-doped polymer optical fiber,” Opt. Lett. 34(20), 3077–3079 (2009).
[Crossref] [PubMed]

K. K. Chow and S. Yamashita, “Four-wave mixing in a single-walled carbon-nanotube-deposited D-shaped fiber and its application in tunable wavelength conversion,” Opt. Express 17(18), 15608–15613 (2009).
[Crossref] [PubMed]

A. Martinez, S. Uchida, Y.-W. Song, T. Ishigure, and S. Yamashita, “Fabrication of carbon nanotube-poly-methylmethacrylate composites for nonlinear photonic devices,” Opt. Express 16(15), 11337–11343 (2008).
[Crossref]

Y.-W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
[Crossref]

Y.-W. Song, K. Morimune, S. Y. Set, and S. Yamashita, “Polarization insensitive all-fiber mode-lockers functioned by carbon nanotubes deposited onto tapered fibers,” Appl. Phys. Lett. 90(2), 021101 (2007).
[Crossref]

K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
[Crossref]

Yoshikawa, Y.

Adv.Matt. (1)

T. Hasan, Z. Sun, F. Wang, F. Bonaccorso, P. Tan, A. G. Rozhin, and A. C. Ferrari, “Nanotube-polymer composites for ultrafast photonics,” Adv.Matt. 21(38-39), 3874–3899 (2009).
[Crossref]

Appl. Phys. Lett. (4)

Y.-W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
[Crossref]

K. K. Chow, M. Tsuji, and S. Yamashita, “Single-walled carbon-nanotube-deposited tapered fiber for four-wave mixing based wavelength conversion,” Appl. Phys. Lett. 96(6), 061104 (2010).
[Crossref]

Y.-W. Song, K. Morimune, S. Y. Set, and S. Yamashita, “Polarization insensitive all-fiber mode-lockers functioned by carbon nanotubes deposited onto tapered fibers,” Appl. Phys. Lett. 90(2), 021101 (2007).
[Crossref]

K. Kashiwagi, S. Yamashita, Y. Nasu, H. Yaguchi, C. S. Goh, and S. Y. Set, “Planar waveguide-type saturable absorber based on carbon nanotubes,” Appl. Phys. Lett. 89(8), 081125 (2006).
[Crossref]

IEEE J. Sel. Top. Quantum Electron. (1)

S. Y. Set, H. Yaguchi, Y. Tanaka, and M. Jablonski, “Ultrafast fiber pulsed lasers incorporating carbon nanotubes,” IEEE J. Sel. Top. Quantum Electron. 10(1), 137–146(2004).
[Crossref]

IEEE Photon. Technol. Lett. (1)

B. Xu, A. Martinez, and S. Yamashita, “Mechanically exfoliated graphene for four wave-mixing based wavelength conversion,” IEEE Photon. Technol. Lett. 24(20), 1792–1794 (2012).
[Crossref]

J. Lightwave Technol. (1)

Nature (1)

S. Iijima and T. Ichihashi, “Single shell carbon nanotubes of one nanometer diameter,” Nature 363(6430), 603–605 (1993).
[Crossref]

Opt. Express (5)

Opt. Lett. (4)

Physica B (1)

V. A. Margulis and T. A. Sizikova, “Theoretical study of third-order nonlinear optical response of semiconductor carbon nanotubes,” Physica B 245(2), 173–189 (1998).
[Crossref]

Other (6)

S. Y. Set, H. Yaguchi, M. Jablonski, Y. Tanaka, Y. Sakakibara, A. Rozhin, M. Tokumoto, H. Kataura, Y. Achiba, and K. Kikuchi, “A noise suppressing saturable absorber at 1550 nm based on carbon nanotube technology,” in Proceedings of Optical Fiber Communication Conference (OFC 2003), no.FL2, 2003.

B. Xu, A. Martinez, S. Y. Set, C. S. Goh, and S. Yamashita, “Dissipative solitons in a dispersion mapped, carbon nanotubes-based figure of eight fiber laser,” PDP2–4, Opto Electronics and Communications Conference ’2012 (OECC’ 2012).

G.P. Agrawal, Nonlinear Fiber Optics 3rd ed. (Academic, 2010).

B. Xu, A. Martinez, K. Fuse, and S. Yamashita, Generation of four wave mixing in graphene and carbon nanotubes optically deposited onto fiber ferrules,” no.CMAA6, CLEO’2011.

Y. W. Song, S. Y. Set, and S. Yamashita, “Novel Kerr shutter using carbon nanotubes deposited onto a 5-cm D-shaped fiber,” in Proceedings of Conference on Lasers and Electro Optics (CLEO 2006), no.CMA4, May 2006.

A. Martinez, M. Omura, M. Takiguchi, B. Xu, T. Kuga, T. Ishigure, and S. Yamashita, “Multi-solitons in a dispersion managed fiber laser using a carbon nanotube-coated taper fiber,” JTu5A, Nonlinear Photonics 2012.

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Figures (4)

Fig. 1
Fig. 1

Optical micrograph of a single-mode silica fiber taper region with a diameter of 1 μm.

Fig. 2
Fig. 2

Experimental setup on FWM based wavelength conversion. Inset: diagram showing an embedded tapered fiber used as a nonlinear optical device.

Fig. 3
Fig. 3

(a) Four-wave mixing spectrum obtained after the CNT-polymer tapered fiber sample with input signal modulated at 10 Gb/s and the corresponding close-up views of (b) converted signal and (c) input signal. Inset (left) and (right) show the 10 Gb/s eye-diagrams of the converted and the input signal, respectively.

Fig. 4
Fig. 4

Conversion efficiency against probe wavelength detuning (a) and two photon absorption(b) in CNT polymer tapered fiber sample.

Tables (1)

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Table 1 Performances in Three Different Tapered Fiber Samples

Equations (2)

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η( L )=(γ p p 2 L)
n 2 = γ CNT c A eff ω 0

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