Abstract

We report a photonic crystal fiber (PCF) coupler having an ultrawide spectral bandwidth keeping single mode operation. The use of the PCF coupler in a fiber-based optical coherence tomography (OCT) system enables us to handle the wide spectral bands of various light sources, including superluminescent diodes (SLDs) at 1300nm and 820nm, Ti:sapphire lasers, and white-light sources. The multiband imaging performances of the PCF-based OCT system are demonstrated by obtaining dental images at 1300nm and 820nm with the same setup. In addition, we show that the PCF coupler could cover the spectrum over a one octave span and guide both the fundamental wave (1030nm) and the second harmonic wave (515nm) simultaneously.

© 2010 Optical Society of America

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  1. D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
    [CrossRef] [PubMed]
  2. J. G. Fujimoto, “Optical coherence tomography for ultrahigh resolution in vivo imaging,” Nat. Biotechnol. 21, 1361-1367(2003).
    [CrossRef] [PubMed]
  3. M. Ohmi and M. Haruna, “Ultra-high resolution optical coherence tomography using a halogen lamp as the light source,” Opt. Rev. 10, 478-481 (2003).
    [CrossRef]
  4. A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
    [CrossRef] [PubMed]
  5. A. D. Aguirre, N. Nishizawa, J. G. Fujimoto, W. Seitz, M. Lederer, and D. Kopf, “Continuum generation in a novel photonic crystal fiber for ultrahigh resolution optical coherence tomography at 800 nm and 1300 nm,” Opt. Express 14, 1145-1160 (2006).
    [CrossRef] [PubMed]
  6. Y. Wang, Y. Zhao, J. S. Nelson, and Z. Chen, “Ultra-high resolution optical coherence tomography by broadband continuum generation from a photonic crystal fiber,” Opt. Lett. 28, 182-184 (2003).
    [CrossRef] [PubMed]
  7. J. M. Schmitt, A. Knuttel, M. Yadlowsky, and M. A. Eckhaus, “Optical-coherence tomography of a dense tissue: statistics of attenuation and backscattering,” Phys. Med. Biol. 39, 1705-1720 (1994).
    [CrossRef] [PubMed]
  8. S. Kray, F. Spöler, M. Först, and H. Kurz, “High-resolution simultaneous dual-band spectral domain optical coherence tomography,” Opt. Lett. 34, 1970-1972 (2009).
    [CrossRef] [PubMed]
  9. Y. Jiang, I. Tomov, Y. Wang, and Z. Chen, “Second-harmonic optical coherence tomography,” Opt. Lett. 29, 1090-1092(2004).
    [CrossRef] [PubMed]
  10. M. V. Sarunic, B. E. Applegate, and J. A. Izatt, “Spectral domain second-harmonic optical coherence tomography,” Opt. Lett. 30, 2391-2393 (2005).
    [CrossRef] [PubMed]
  11. J. Su, I. V. Tomov, Y. Jiang, and Z. Chen, “High-resolution frequency-domain second-harmonic optical coherence tomography,” Appl. Opt. 46, 1770-1775 (2007).
    [CrossRef] [PubMed]
  12. T. A. Birks, J. C. Knight, and P. St. J. Russell, “Endlessly single-mode photonic crystal fiber,” Opt. Lett. 22, 961-963 (1997).
    [CrossRef] [PubMed]
  13. B. H. Lee, J. B. Eom, J. C. Kim, D. S. Moon, and U. C. Paek, “Photonic crystal fiber coupler,” Opt. Lett. 27, 812-814 (2002).
    [CrossRef]
  14. H. Kim, J. C. Kim, U. C. Paek, and B. H. Lee, “Tunable photonic crystal fiber coupler based on a side-polishing technique,” Opt. Lett. 29, 1194-1196 (2004).
    [CrossRef] [PubMed]
  15. S. Y. Ryu, H. Y. Choi, J. Na, E. S. Choi, G. H. Yang and B. H. Lee, “Optical coherence tomography implemented by photonic crystal fiber,” Opt. Quantum Electron. 37, 1191 (2005).
  16. M. D. Nielsen, N. A. Mortensen, and J. R. Folkenberg, “Reduced microdeformation attenuation in large-mode-area photonic crystal fibers for visible applications,” Opt. Lett. 28, 1645-1647 (2003).
    [CrossRef] [PubMed]
  17. H. Lim, Y. Jiang, Y. Wang, Y. Huang, and Z. Chen, “Ultrahigh-resolution optical coherence tomography with a fiber laser source at 1 μm,” Opt. Lett. 30, 1171-1173 (2005).
    [CrossRef] [PubMed]

2009

2007

2006

2005

2004

H. Kim, J. C. Kim, U. C. Paek, and B. H. Lee, “Tunable photonic crystal fiber coupler based on a side-polishing technique,” Opt. Lett. 29, 1194-1196 (2004).
[CrossRef] [PubMed]

Y. Jiang, I. Tomov, Y. Wang, and Z. Chen, “Second-harmonic optical coherence tomography,” Opt. Lett. 29, 1090-1092(2004).
[CrossRef] [PubMed]

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

2003

2002

1997

1994

J. M. Schmitt, A. Knuttel, M. Yadlowsky, and M. A. Eckhaus, “Optical-coherence tomography of a dense tissue: statistics of attenuation and backscattering,” Phys. Med. Biol. 39, 1705-1720 (1994).
[CrossRef] [PubMed]

1991

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

1191

S. Y. Ryu, H. Y. Choi, J. Na, E. S. Choi, G. H. Yang and B. H. Lee, “Optical coherence tomography implemented by photonic crystal fiber,” Opt. Quantum Electron. 37, 1191 (2005).

Aguirre, A. D.

Ahnelt, P. K.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Applegate, B. E.

Birks, T. A.

Bizheva, K.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Budka, H.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Chang, W.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Chen, Z.

Choi, E. S.

S. Y. Ryu, H. Y. Choi, J. Na, E. S. Choi, G. H. Yang and B. H. Lee, “Optical coherence tomography implemented by photonic crystal fiber,” Opt. Quantum Electron. 37, 1191 (2005).

Choi, H. Y.

S. Y. Ryu, H. Y. Choi, J. Na, E. S. Choi, G. H. Yang and B. H. Lee, “Optical coherence tomography implemented by photonic crystal fiber,” Opt. Quantum Electron. 37, 1191 (2005).

Cowey, A.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Drexler, W.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Eckhaus, M. A.

J. M. Schmitt, A. Knuttel, M. Yadlowsky, and M. A. Eckhaus, “Optical-coherence tomography of a dense tissue: statistics of attenuation and backscattering,” Phys. Med. Biol. 39, 1705-1720 (1994).
[CrossRef] [PubMed]

Eom, J. B.

Flotte, T.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Folkenberg, J. R.

Först, M.

Fujimoto, J. G.

A. D. Aguirre, N. Nishizawa, J. G. Fujimoto, W. Seitz, M. Lederer, and D. Kopf, “Continuum generation in a novel photonic crystal fiber for ultrahigh resolution optical coherence tomography at 800 nm and 1300 nm,” Opt. Express 14, 1145-1160 (2006).
[CrossRef] [PubMed]

J. G. Fujimoto, “Optical coherence tomography for ultrahigh resolution in vivo imaging,” Nat. Biotechnol. 21, 1361-1367(2003).
[CrossRef] [PubMed]

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Gregory, K.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Haruna, M.

M. Ohmi and M. Haruna, “Ultra-high resolution optical coherence tomography using a halogen lamp as the light source,” Opt. Rev. 10, 478-481 (2003).
[CrossRef]

Hee, M. R.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Hermann, B.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Huang, D.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Huang, Y.

Izatt, J. A.

Jiang, Y.

Kim, H.

Kim, J. C.

Knight, J. C.

Knuttel, A.

J. M. Schmitt, A. Knuttel, M. Yadlowsky, and M. A. Eckhaus, “Optical-coherence tomography of a dense tissue: statistics of attenuation and backscattering,” Phys. Med. Biol. 39, 1705-1720 (1994).
[CrossRef] [PubMed]

Kopf, D.

Kray, S.

Kurz, H.

Le, T.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Lederer, M.

Lee, B. H.

Lim, H.

Lin, C. P.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Menzel, R.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Moon, D. S.

Morgan, J. E.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Mortensen, N. A.

Na, J.

S. Y. Ryu, H. Y. Choi, J. Na, E. S. Choi, G. H. Yang and B. H. Lee, “Optical coherence tomography implemented by photonic crystal fiber,” Opt. Quantum Electron. 37, 1191 (2005).

Nelson, J. S.

Nielsen, M. D.

Nishizawa, N.

Ohmi, M.

M. Ohmi and M. Haruna, “Ultra-high resolution optical coherence tomography using a halogen lamp as the light source,” Opt. Rev. 10, 478-481 (2003).
[CrossRef]

Paek, U. C.

Povazay, B.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Preusser, M.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Puliafito, C. A.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Reitsamer, H.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Russell, P. St. J.

Ryu, S. Y.

S. Y. Ryu, H. Y. Choi, J. Na, E. S. Choi, G. H. Yang and B. H. Lee, “Optical coherence tomography implemented by photonic crystal fiber,” Opt. Quantum Electron. 37, 1191 (2005).

Sarunic, M. V.

Sattmann, H.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Schmitt, J. M.

J. M. Schmitt, A. Knuttel, M. Yadlowsky, and M. A. Eckhaus, “Optical-coherence tomography of a dense tissue: statistics of attenuation and backscattering,” Phys. Med. Biol. 39, 1705-1720 (1994).
[CrossRef] [PubMed]

Schubert, Ch.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Schuman, J. S.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Seefeld, M.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Seitz, W.

Spöler, F.

Stingl, A.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Stinson, W. G.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Su, J.

Swanson, E. A.

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

Tomov, I.

Tomov, I. V.

Unterhuber, A.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

Wang, Y.

Yadlowsky, M.

J. M. Schmitt, A. Knuttel, M. Yadlowsky, and M. A. Eckhaus, “Optical-coherence tomography of a dense tissue: statistics of attenuation and backscattering,” Phys. Med. Biol. 39, 1705-1720 (1994).
[CrossRef] [PubMed]

Yang, G. H.

S. Y. Ryu, H. Y. Choi, J. Na, E. S. Choi, G. H. Yang and B. H. Lee, “Optical coherence tomography implemented by photonic crystal fiber,” Opt. Quantum Electron. 37, 1191 (2005).

Zhao, Y.

Appl. Opt.

Nat. Biotechnol.

J. G. Fujimoto, “Optical coherence tomography for ultrahigh resolution in vivo imaging,” Nat. Biotechnol. 21, 1361-1367(2003).
[CrossRef] [PubMed]

Opt. Express

Opt. Lett.

Y. Wang, Y. Zhao, J. S. Nelson, and Z. Chen, “Ultra-high resolution optical coherence tomography by broadband continuum generation from a photonic crystal fiber,” Opt. Lett. 28, 182-184 (2003).
[CrossRef] [PubMed]

T. A. Birks, J. C. Knight, and P. St. J. Russell, “Endlessly single-mode photonic crystal fiber,” Opt. Lett. 22, 961-963 (1997).
[CrossRef] [PubMed]

B. H. Lee, J. B. Eom, J. C. Kim, D. S. Moon, and U. C. Paek, “Photonic crystal fiber coupler,” Opt. Lett. 27, 812-814 (2002).
[CrossRef]

H. Kim, J. C. Kim, U. C. Paek, and B. H. Lee, “Tunable photonic crystal fiber coupler based on a side-polishing technique,” Opt. Lett. 29, 1194-1196 (2004).
[CrossRef] [PubMed]

S. Kray, F. Spöler, M. Först, and H. Kurz, “High-resolution simultaneous dual-band spectral domain optical coherence tomography,” Opt. Lett. 34, 1970-1972 (2009).
[CrossRef] [PubMed]

Y. Jiang, I. Tomov, Y. Wang, and Z. Chen, “Second-harmonic optical coherence tomography,” Opt. Lett. 29, 1090-1092(2004).
[CrossRef] [PubMed]

M. V. Sarunic, B. E. Applegate, and J. A. Izatt, “Spectral domain second-harmonic optical coherence tomography,” Opt. Lett. 30, 2391-2393 (2005).
[CrossRef] [PubMed]

M. D. Nielsen, N. A. Mortensen, and J. R. Folkenberg, “Reduced microdeformation attenuation in large-mode-area photonic crystal fibers for visible applications,” Opt. Lett. 28, 1645-1647 (2003).
[CrossRef] [PubMed]

H. Lim, Y. Jiang, Y. Wang, Y. Huang, and Z. Chen, “Ultrahigh-resolution optical coherence tomography with a fiber laser source at 1 μm,” Opt. Lett. 30, 1171-1173 (2005).
[CrossRef] [PubMed]

Opt. Quantum Electron.

S. Y. Ryu, H. Y. Choi, J. Na, E. S. Choi, G. H. Yang and B. H. Lee, “Optical coherence tomography implemented by photonic crystal fiber,” Opt. Quantum Electron. 37, 1191 (2005).

Opt. Rev.

M. Ohmi and M. Haruna, “Ultra-high resolution optical coherence tomography using a halogen lamp as the light source,” Opt. Rev. 10, 478-481 (2003).
[CrossRef]

Phys. Med. Biol.

A. Unterhuber, B. Povazay, K. Bizheva, B. Hermann, H. Sattmann, A. Stingl, T. Le, M. Seefeld, R. Menzel, M. Preusser, H. Budka, Ch. Schubert, H. Reitsamer, P. K. Ahnelt, J. E. Morgan, A. Cowey, and W. Drexler, “Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography,” Phys. Med. Biol. 49, 1235-1246 (2004).
[CrossRef] [PubMed]

J. M. Schmitt, A. Knuttel, M. Yadlowsky, and M. A. Eckhaus, “Optical-coherence tomography of a dense tissue: statistics of attenuation and backscattering,” Phys. Med. Biol. 39, 1705-1720 (1994).
[CrossRef] [PubMed]

Science

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254, 1178-1181 (1991).
[CrossRef] [PubMed]

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Figures (6)

Fig. 1
Fig. 1

(a) Transmission spectrum of an input white-light source and the transmission spectra measured at both output ports of the fabricated PCF coupler. The inset pictures are mode-field patterns at both ports that are taken with a CCD camera at a 543.5 nm wavelength. (b) The mode-field pattern measured at output port 1 and one of the cross sections with a corresponding Gaussian fit curve.

Fig. 2
Fig. 2

(a) Transmission spectra and the corresponding interferograms with various light sources: (b) for a Ti:sapphire laser source ( cw , 760 nm ; bw , 80 nm ), (c) for a SLD source ( cw , 820 nm ; bw , 48 nm ), (d) for a white light source, and (e) for a SLD source ( cw , 1300 nm ; bw , 50 nm ); cw is center wavelength, and bw is bandwidth.

Fig. 3
Fig. 3

OCT images of a human tooth obtained with the OCT system based on the proposed ultrawideband PCF coupler but with SLD sources having different center wavelengths: (a)  1300 nm and (b)  820 nm (D, dentin; E, enamel, DEJ, dento-enamel junction). Scale bar is 1 mm .

Fig. 4
Fig. 4

Extended transmission spectrum at output port 1 of the PCF coupler. The available spectral band of the PCF coupler ranged from 500 nm to more than 1400 nm.

Fig. 5
Fig. 5

PCF coupler based interferometer for measurements of both fundamental and SH waves. A high power Yb-doped fiber laser and BBO crystal ( β B a B 2 O 4 ) are used for generation of SH waves. (DM, dichroic mirror; PD, photodetector; and PMT, photomultiplier tube).

Fig. 6
Fig. 6

Output spectra of (a) the fundamental wave and (b) the SH wave; (c) enlarged interference fringes from the fundamental wave (top) and the SH wave (bottom).

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