Two-cycle pulse generation from mode-locked Kerr frequency combs based on an integrated dispersion-flattened micro-resonator

Kerr frequency comb generation from a nonlinear high-Q resonator becomes an interdisciplinary research topic emerging from nonlinear optics, integrated photonics, and ultrafast optics. We show that ultrashort cavity solitons can be generated from a mode-locked Kerr frequency comb in a dispersion-engineered nonlinear microresonator. The spectral flatness of the comb is greatly improved by making the cavity soliton as short as two optical cycles, with a comb line power variation below 20 dB over an octave-spanning bandwidth from near infrared to mid infrared, while excellent spectral coherence is achieved by soliton-based mode locking. It is shown by simulation that the two-cycle solitons are robust to the wideband soliton perturbation effects such as all-order dispersion, frequency-dependent Q-factor, dispersive wave generation, Kerr self-steepening, and stimulated Raman scattering. The pump power used to generate an octave-spanning combs can be significantly reduced when a dispersion profile with four zero-dispersion frequencies, which paves the way to achieve a fully integrated frequency comb generator on a chip.

[1]  L. Nenadovic,et al.  Rapid and precise absolute distance measurements at long range , 2009 .

[2]  Lute Maleki,et al.  Generation of optical frequency combs with a CaF2 resonator. , 2009, Optics letters.

[3]  T. Sylvestre,et al.  Modeling of octave-spanning Kerr frequency combs using a generalized mean-field Lugiato-Lefever model. , 2012, Optics letters.

[4]  A. Matsko,et al.  Mode-locked Kerr frequency combs. , 2011, Optics letters.

[5]  T. J. Kippenberg,et al.  Ultra-high-Q toroid microcavity on a chip , 2003, Nature.

[6]  Thomas Udem,et al.  A frequency comb in the extreme ultraviolet , 2005, Nature.

[7]  Michal Lipson,et al.  Octave-spanning frequency comb generation in a silicon nitride chip. , 2011, Optics letters.

[8]  G. Agrawal,et al.  Nonlinear optical phenomena in silicon waveguides: modeling and applications. , 2007, Optics express.

[9]  Christian Bohley,et al.  Tuning of zero group velocity dispersion in infiltrated vertical silicon slot waveguides. , 2013, Optics express.

[10]  C. Menyuk,et al.  Spatiotemporal Lugiato-Lefever formalism for Kerr-comb generation in whispering-gallery-mode resonators , 2012, 1210.8210.

[11]  Jurgen Michel,et al.  Nonlinear Group IV photonics based on silicon and germanium: from near-infrared to mid-infrared , 2014 .

[12]  Nathan R. Newbury,et al.  Searching for applications with a fine-tooth comb , 2011 .

[13]  Yoshitomo Okawachi,et al.  Route to stabilized ultrabroadband microresonator-based frequency combs. , 2013, Optics letters.

[14]  Michal Lipson,et al.  High confinement micron-scale silicon nitride high Q ring resonator. , 2009, Optics express.

[15]  T. Hänsch,et al.  Optical frequency metrology , 2002, Nature.

[16]  Tanya M Monro,et al.  A full vectorial model for pulse propagation in emerging waveguides with subwavelength structures part I: Kerr nonlinearity. , 2009, Optics express.

[17]  Marc Haelterman,et al.  Dissipative modulation instability in a nonlinear dispersive ring cavity , 1992 .

[18]  Yang Yue,et al.  Silicon waveguide with four zero-dispersion wavelengths and its application in on-chip octave-spanning supercontinuum generation. , 2012, Optics express.

[19]  R. Lefever,et al.  Spatial dissipative structures in passive optical systems. , 1987, Physical review letters.

[20]  Yang Yue,et al.  On-chip two-octave supercontinuum generation by enhancing self-steepening of optical pulses. , 2011, Optics express.

[21]  Andrew M. Weiner,et al.  Spectral line-by-line pulse shaping of an on-chip microresonator frequency comb , 2011, CLEO 2011.

[22]  Lute Maleki,et al.  Tunable optical frequency comb with a crystalline whispering gallery mode resonator. , 2008, Physical review letters.

[23]  Jun Ye,et al.  Colloquium: Femtosecond optical frequency combs , 2003 .

[24]  Yang Yue,et al.  Flattened dispersion in silicon slot waveguides. , 2010, Optics express.

[25]  Govind P. Agrawal,et al.  Nonlinear Fiber Optics , 1989 .

[26]  B. Krauskopf,et al.  Proc of SPIE , 2003 .

[27]  Xianglong Zeng,et al.  Optical Cherenkov radiation in an As2S3 slot waveguide with four zero-dispersion wavelengths. , 2013, Optics express.

[28]  Miro Erkintalo,et al.  Universal scaling laws of Kerr frequency combs. , 2013, Optics letters.

[29]  T. Hänsch,et al.  Laser Frequency Combs for Astronomical Observations , 2008, Science.

[30]  T. Kippenberg,et al.  Microresonator based optical frequency combs , 2012, 2012 Conference on Lasers and Electro-Optics (CLEO).

[31]  Scott A. Diddams,et al.  Spectral and temporal characterization of a fused-quartz-microresonator optical frequency comb , 2011, 1106.2487.

[32]  S. Coen,et al.  Temporal cavity solitons in one-dimensional Kerr media as bits in an all-optical buffer , 2010 .

[33]  Roberto Morandotti,et al.  CMOS-compatible integrated optical hyper-parametric oscillator , 2010 .

[34]  T. Kippenberg,et al.  Optical frequency comb generation from a monolithic microresonator , 2007, Nature.

[35]  Farzin Emami,et al.  Strip/slot hybrid arsenic tri-sulfide waveguide with ultra-flat and low dispersion profile over an ultra-wide bandwidth. , 2013, Optics letters.

[36]  G. Agrawal,et al.  Dispersion tailoring and soliton propagation in silicon waveguides. , 2006, Optics letters.

[37]  U. Keller.  Recent developments in compact ultrafast lasers , 2003, Nature.

[38]  A. Weiner,et al.  Spectral line‐by‐line shaping for optical and microwave arbitrary waveform generations , 2008 .

[39]  L C Kimerling,et al.  Fabrication of ultralow-loss Si/SiO(2) waveguides by roughness reduction. , 2001, Optics letters.

[40]  T. Herr,et al.  Temporal solitons in microresonators driven by optical pulses , 2016, Nature Photonics.

[41]  J. Dudley,et al.  Supercontinuum generation in photonic crystal fiber , 2006 .

[42]  Yang Yue,et al.  Highly dispersive slot waveguides. , 2009, Optics express.

[43]  Alexander L. Gaeta,et al.  Modelocking and Femtosecond Pulse Generation in Chip-Based Frequency Combs , 2013 .

[44]  M. Lipson,et al.  Tailored anomalous group-velocity dispersion in silicon channel waveguides. , 2006, Optics express.

[45]  M. Gorodetsky,et al.  Octave spanning tunable frequency comb from a microresonator. , 2011, Physical review letters.

[46]  Michal Lipson,et al.  CMOS-compatible multiple-wavelength oscillator for on-chip optical interconnects , 2010 .