Complete Publications 

(1) J. Van Howe, J. Hansryd and C. Xu 2004 Novel multi-wavelength pulsed source with time lens compression (Opt. Lett., 29, 1470-1472)

(2) J. Hansryd , J. Van Howe, and C. Xu 2004 Nonlinear cross-talk and compensation in QDPASK optical transmission (IEEE Photon. Technol. Lett., 16, 1975-1977)

(3)* Xu, C., X. Liu and X. Wei 2004 Modulation formats for high spectral efficiency fiber optic communications (IEEE J. of Select Topics in Quantum Electron., 10, 281-293).

(4) J. Hansryd , J. Van Howe, and C. Xu 2004 Post-nonlinearity compensation in DPSK optical transmission (IEEE Photon. Technol. Lett., in press)

(5) X. Liu, C. Xu and X. Wei 2004 Performance analysis of time/polarization multiplexed40-Gb/s RZ-DPSK DWDM transmission, (IEEE Photon. Technol. Lett., 16, 302-304 ).

(6) Chris Xu and Xiang Liu 2003 Photonic analog-to-digital converter using soliton self-frequency shift and interleaving spectral filters (Opt. Lett., 28, 986-988)

(7) Chris Xu, Xiang Liu, Linn Mollenaur, and Xing Wei 2003 Comparison of phase shift keying and on-off-keying in long haul dispersion managed transmission, (IEEE Photon. Technol. Lett. 15, 617-619)

(8) Xing Wei, Xiang Liu, and Chris Xu 2003 Numerical simulation of the SPM penalty in a 10-Gb/s RZ-DPSK system (IEEE Photon. Technol. Lett., 15,1636-1638)

(9) C. J. McKinstrie,1 C. Xie and C. Xu 2003 Effects of cross-phase modulation on phase jitter in soliton systems with constant dispersion, (Opt. Lett., 28, 604-606)

(10) Chris Xu, Linn Mollenauer, and Xiang Liu 2002 Compensation of Nonlinear Self-Phase Modulation with Phase Modulators. (Electron. Lett., 38, 1578-1579)

(11) Jeffrey M. Roth, T. E. Murphy and Chris Xu 2002 Ultra-sensitive, high dynamic range two-photon absorption in a GaAs photomultiplier tube. (Opt. Lett., 27, 2076-2078)

(12) Chris Xu and Xiang Liu 2002, Post nonlinearity compensation with data driven phase modulator in phase shift keying system. Opt. Lett.27, 1629-1631.

(13) Chris Xu, Chongjin Xie and Linn F. Mollenauer 2002, Soliton collisions in a wavelength-division-multiplexed dispersion managed soliton transmission system. Opt. Lett.27,1303-1305.

(14) Xiang Liu, Xing Wei, Alan Gnauck, Chris Xu and Lisa K. Wickham 2002 Suppression of ghost pulse generation resulting from intra-channel four-wave-mixing in high-speed transmission by phase inversion between adjacent marker blocks Opt. Lett. 27, 1177-1179.

(15) Chris Xu, Jeffrey M. Roth, Wayne H. Knox, and Karen Bergman 2002 Ultra-sensitive autocorrelation of 1.5 mm light with a photon-counting silicon avalanche diode. Electron. Lett. 38, 86-88.

(16) Qinhao Ye, Chris Xu, Xiang Liu, and Wayne Knox 2002, Dispersion Measurement of Tapered Air-Silica Microstructure Fibers by White-Light Interferometry. App. Opt., 41, 4467-4470.

(17)* Chris Xu Two-photon optical beam induced current imaging of ICs and optoelectronics in Confocal and Two-photon Microscopy, (Ed. Alberto Diaspro) John Wiley & Sons, 539-554 2002.

(18)* Chris Xu Two-photon absorption cross section of fluorophores, in Confocal and Two-photon Microscopy (Ed. Alberto Diaspro), John Wiley & Sons, 75-100 2002.

(19) Chandalia, J. K., Eggleton, B. J., Windler, R. S., Kosinski, S. G., Liu, X. and Xu, C.  Adiabatic coupling in tapered air-silica microstructured optical fiber. 2001 IEEE Photon. Tech. Lett 13, 52-54.

(20) Liu, X., Xu, C., Knox, W. H., Chandalia, J. K., Eggleton, B. J., Kosinski, S. G. and Windler, R. S. 2001 Soliton self-frequency shift in a short tapered air-silica microstructure fiber Opt. Lett. 26, 358-360.

(21) Chris Xu, Leo M. F. Chirovsky, W. S. Hobson, J. Lopata, Wayne H.Knox, John E. Cunningham, William Y. Jan, and L. A. DýAsaro 2000 Two-photon photocurrent imaging of vertical cavity surface emitting lasers Appl. Phys. Lett.76, 1510-1512.

(22)* Chris Xu 1999 Two-photon cross sections of indicators, In Imaging living cells, (Eds, Yuste, R., Lanni, F., and Konnerth, A.) Chapter 19.

(23) Xu, C. and Denk, W. 1999 Near infrared two- and one-photon optical beam induced current imaging through the backside of integrated circuits J. Appl. Phys. 86, 2226-2231.

(24) Kawata, Y., Xu, C. and Denk, W. 1999 Feasibility of molecular-resolution fluorescence near-field microscopy using multi-photon absorption and field enhancement near a sharp tip J. Appl. Phys. 85, 1294-1301.

(25) Albota, M., Xu, C., Webb, W. W. et al. 1998 Design of organic molecules with large two-photon absorption cross sections Science 281, 1653-1656.

(26) Albota, M., Xu, C. and Webb, W. W. 1998 Two-photon fluorescece excitation cross sections of biomolecular probes from 690 to 960 nm Appl. Opt. 37, 7352-7356.

(27) Xu, C. and Denk, W. 1997 Two-photon optical beam induced current imaging through the backside of integrated circuit Appl. Phys. Lett., 71, 2578-2580.

(28) Shear, J. B., Xu, C. and Webb, W. W. 1997 Multiphoton-excited visible emission by serotonin solutions Photochem. Photobiol., 65, 931-936.

(29) Xu, C., Shear, J. B. and Webb, W. W. 1997 Hype-Rayleigh and hyper-Raman scattering background of liquid water in two-photon excited fluorescence detection Anal. Chem., 69, 1285-1287.

(30) Guild, J., Xu, C. and Webb, W. W. 1997 Measurement of group delay dispersion of high numerical aperture objectives using two-photon excited fluorescence Appl. Opt., 36, 397-401.

(31)* Xu, C. and Webb, W. W. 1997 Multiphoton excitation of molecular fluorophores and nonlinear laser microscopy, In Topics in fluorescence spectroscopy, Vol. 5 (Ed, Lakowicz, J. R.), 471-540.

(32)* Xu, C., Williams, R. M., Zipfel, W. and Webb, W. W. 1996 Multiphoton excitation cross sections of molecular fluorophores Bioimaging, 4, 198-207.

(33) Xu, C., Zipfel, W., Shear, J. B., Williams, R. M. and Webb, W. W. 1996 Multiphoton fluorescence excitation: new spectral windows for biological nonlinear microscopy Proc. Nat. Acad. Sci. USA, 93, 10763-10768.

(34) Xu, C. and Webb, W. W. 1996 Measurement of two-photon excitation cross-sections of molecular fluorophores with data from 690 nm to 1050 nm J. Opt. Soc. Am. B, 13, 481-491.

(35) Mertz, J., Xu, C. and Webb, W. W. 1995 Single molecule detection by two-photon excited fluorescence Opt. Lett., 20, 2532-2534.

(36) Xu, C., Guild, J., Webb, W. W. and Denk, W. 1995 Determination of absolute two-photon excitation cross-sections by in situ second-order autocorrelation Opt. Lett., 20, 2372-2374.

(37) Meng, X. F. et al. 1991 Preparation and properties of in-stu YBCO films on Si substrates with buffer layers IEEE T. Magn. 27, 1638-1641.

(38) Meng, X. F. et al. 1991 Preparation and properties of in-stu YBCO films on Si substrates with buffer layers IEEE T. Magn. 27, 3305-3307.

Published Conference Papers and Abstracts

(1) C. Xu, J. Guild, and W. W. Webb, "Two-photon fluorescence excitation spectra of calcium probe indo-1," Biophys. J. 66, A161 (1994).

(2) C. Xu, J. Guild, and W. W. Webb, "Two-photon excitation cross-sections for commonly used biological fluorophores," Biophys. J. 68 A197 (1995).

(3)* Chris Xu and Watt W. Webb, "Application of Two-photon Microscopy to Cell Biology" (New York Section APS 72nd Semiannual Symposium, Schenectady, New York, 1995).

(4)* Chris Xu and Watt W. Webb, "Cross-sections for Two-photon Excitation of Commonly Used Biological Fluorophores" (39th Annual Meeting of the Biophysical Society, San Francisco, California, 1995).

(5) C. Xu, W. Zipfel and W. W. Webb, "Three-photon excited fluorescence and applications in nonlinear microscopy," Biophys. J. 70 A429 (1996).

(6) J. Mertz, C. Xu, and W. W. Webb, "Single molecule detection by two-photon excited fluorescence," Biophys. J. 70 A374 (1996).

(7) J. Guild, C. Xu, and W. W. Webb, "Pulse dispersion by high numerical aperture objectives for nonlinear microscopy using two-photon fluorescence excitation," Biophys. J. 70 A284 (1996).

(8)* Chris Xu and Watt W. Webb, "Multiphoton excitation to illuminate nonlinear laser microscopy" (Ultrafast Phenomena, San Diego, CA, 1996).

(9)* Chris Xu and Watt W. Webb "Multiphoton fluorescence excitation: new spectral windows for biological imaging" (International Symposium on Optical Science, Engineering, and Instrumentation, Denver, Colorado, 4-9 August 1996)

(10) C. Xu and Watt W. Webb, "Multiphoton excitation of fluorophores in nonlinear laser microscopy," OSA Annual Meeting & Exhibit, October 20-24, 1996, Rochester, NY.

(11) C. Xu, J. B. Shear, M. Albota, and Watt W. Webb, "Multiphoton excitation of molecular fluorophores and native biological absorbers," 41st Annual Meeting of the Biophysical Society, March 2-6, 1997, New Orleans, Louisiana.

(12) J. B. Shear, C. Xu, and Watt W. Webb, "Multiphoton excited photochemistry yields visible emission from serotonin," 41st Annual Meeting of the Biophysical Society, March 2-6, 1997, New Orleans, Louisiana.

(13) Xu, C. and Denk, W. "Two-photon optical beam induced current imaging through the backside of integrated circuit," CLEO/QEL, May 18-23, 1997, Baltimore, MD, Post-deadline paper.

(14)* Chris Xu and Winfried Denk, "Applications of nonlinear optics" (Nonlinear Optics ý98, Princeville, Kauai, Hawaii, 9-14 August 1998)

(15)* Chris Xu and Winfried Denk, "Two-photon optical beam induced current imaging through the backside of integrated circuit" (28th Winter Colloquium on The Physics of Quantum Electronics, Snowbird, Utah, 4-7 January 1998).

(16) Perry JW, Albota M, Ananthavel S, et al. "Design of organic molecules with large two-photon absorption cross-sections," ABSTR PAP AM CHEM S 217: U378-U378 Part 2 MAR 21 1999

(17) Chris Xu, Leo M. F. Chirovsky, W. S. Hobson, et al. "Femtosecond two-photon photocurrent imaging of VCSELs," CLEO/QEL, May 7-12, 2000, San Francisco, CA.

(18) Chandalia, J. K., Eggleton, B. J., Windler, R. S., Kosinski, S. G., Liu, X. and Xu, C "Adiabatic coupling in tapered air-silica microstructured optical fiber" OFC March 17-22, 2001, Anaheim, CA.

(19) Liu, X., Xu, C., Knox, W. H., Chandalia, J. K., Eggleton, B. J., Kosinski, S. G. and Windler, R. S. "Soliton self-frequency shift in a short tapered air-silica microstructure fiber" OFC March 17-22, 2001, Anaheim, CA.

(20) Xiang Liu, C. Xu, W. H. Knox, and L. Boivin, "Soliton Compression from 8 ps to 120 fs in a Raman amplifier and EDFA" CLEO/QEL Baltimore, MD, May 6-11, 2001

(21)* Chris Xu, "Chirped pulse DWDM for broadband access" (Annual IEEE/LEOS Workshop on Interconnects within High Speed Digital Systems, Santa-Fe, NM, 13-16 May 2001).

(22)* Chris Xu, "Building blocks of Ultralong Haul Optical Transmission" (Marcus Evans Conference on Ultralong Haul Optical Transport, 6-9 March, 2001, Charlotte)

(23)* Xiang Liu, Chris Xu, and Linn F. Mollenauer, "Dispersion Managed Soliton Transmission" (APOC 2001, Beijing, China, Nov. 11-15, 2001).

(24)* Chris Xu, "Femtosecond technologies and applications in telecommunications" (Asia Pacific Radio Sciences and Communications, Tokyo, Japan, 1-4 August, 2001).

(25) J. Roth, C. Xu, W. H. Know and K. Bergman "Ultra-sensitive autocorrelation of 1.5 mm light with a photon-counting silicon avalanche diode" Eighth Rochester Conference on Coherence and Quantum Optics, Rochester, NY, June 13-16, 2001.

(26) J. Roth, C. Xu, W. H. Know and K. Bergmee "Ultra-sensitive autocorrelation of 1.5 mm light with a photon-counting silicon avalanche diode and applications in Telecommunications" IEEE LEOS, San Diego, CA, Nov.12-15, 2001.

(27) Qinhao Ye, Chris Xu, Xiang Liu, and Wayne Knox "Dispersion Measurement of Tapered Air-Silica Microstructure Fibers by White-Light Interferometry" Asia Pacific Optical Communications Conference, Beijing, China, Nov. 11-15, 2001.

(28) A. H. Gnauck, G. Raybon, S. Chandrasekhar et al., "2.5 Tb/s (64x42.7 Gb/s) Transmission Over 40x100 km NZDSF Using RZ-DPSK Format and All-Raman-Amplified Spans," Post Deadline paper, OFC, Anaheim, CA, March 17-22, 2002.

(29) C. Xu and L. Mollenauer "Time-lens timing-jitter compensator in ultra-long haul DWDM soliton transmissions" Post Deadline Paper, CLEO/QEL, May 11-16, 2002, Long Beach, CA.

(30) X. Liu, C. Xu and W. H. Knox "Optimization of Optical 2R Regeneration", CLEO/QEL, May 11-16, 2002, Long Beach, CA.

(31) C. Xu, X. Liu, and X. Wei, "Ultra-long Haul DWDM Transmission with Differential Phase Shift Keying Dispersion Managed Soliton," ECOCý02, Copenhagen, Denmark, September 8-12, 2002.

(32) J. Roth, C. Xu, W. H. Knox and K. Bergman "Dynamic compensations in telecommunications using a silicon photon counting APD" ECOCý02, Copenhagen, Denmark, September 8-12, 2002.

(33) X. Liu, C. Xu and X. Wei "Phase Noise Analysis in Phase Shift Keying Systems" ECOCý02, Copenhagen, Denmark, September 8-12, 2002.

(34) C. Xu, L. F. Mollenauer, and X. Liu "Compensation of Nonlinear Self-phase modulation with phase modulators" OSA annual meeting, Orlando, FL, Sept. 29-Oct. 3, 2002.

(35) C. Xu, X. Liu, and X. Wei"Comparison of Phase shift keying and on-off-keying in long haul dispersion managed transmission" OFC2003, Atlanta, GA, Mar. 23-28, 2003.

(36) J. Hansryd, J. Van Howe, and C. Xu "Demonstration of nonlinear phase jitter compensation in a DPSK transmission system" CLEO 2004.

(37) J. Hansryd, J. Van Howe, and C. Xu "Nonlinear cross-talk and compensation in quaternary differential phase amplitude-shift-keying transmission" OFC 2004.

(38) J. Van Howe, J. Hansryd and C. Xu " Novel multi-wavelength pulse generator for real-time WDM optical sampling" CLEO 2004.

(39) J. Van Howe, and C. Xu "Ultrafast tunable optical delay line" OSA annual meeting 2004.

* Indicates invited talk/paper