An integrated nonlinear optical loop mirror in silicon photonics for all-optical signal processing

The nonlinear optical loop mirror (NOLM) has been studied for several decades and has attracted considerable attention for applications in high data rate optical communications and all-optical signal processing. The majority of NOLM research has focused on silica fiber-based implementations. While various fiber designs have been considered to increase the nonlinearity and manage dispersion, several meters to hundreds of meters of fiber are still required. On the other hand, there is increasing interest in developing photonic integrated circuits for realizing signal processing functions. In this paper, we realize the first-ever passive integrated NOLM in silicon photonics and demonstrate its application for all-optical signal processing. In particular, we show wavelength conversion of 10 Gb/s return-to-zero on-off keying (RZ-OOK) signals over a wavelength range of 30 nm with error-free operation and a power penalty of less than 2.5 dB, we achieve error-free nonreturn to zero (NRZ)-to-RZ modulation format conversion at 10 Gb/s also with a power penalty of less than 2.8 dB, and we obtain error-free all-optical time-division demultiplexing of a 40 Gb/s RZ-OOK data signal into its 10 Gb/s tributary channels with a maximum power penalty of 3.5 dB.The nonlinear optical loop mirror (NOLM) has been studied for several decades and has attracted considerable attention for applications in high data rate optical communications and all-optical signal processing. The majority of NOLM research has focused on silica fiber-based implementations. While various fiber designs have been considered to increase the nonlinearity and manage dispersion, several meters to hundreds of meters of fiber are still required. On the other hand, there is increasing interest in developing photonic integrated circuits for realizing signal processing functions. In this paper, we realize the first-ever passive integrated NOLM in silicon photonics and demonstrate its application for all-optical signal processing. In particular, we show wavelength conversion of 10 Gb/s return-to-zero on-off keying (RZ-OOK) signals over a wavelength range of 30 nm with error-free operation and a power penalty of less than 2.5 dB, we achieve error-free nonreturn to zero (NRZ)-to-RZ modulation format c...

[1]  Masataka Nakazawa,et al.  Ultrafast nonlinear optical loop mirror for demultiplexing 640 Gbit/s TDM signals , 1998 .

[2]  K. Goda,et al.  Dispersive Fourier transformation for fast continuous single-shot measurements , 2013, Nature Photonics.

[3]  Kazuhiro Ikeda,et al.  Group velocity dispersion and self phase modulation in silicon nitride waveguides , 2010 .

[4]  A. Maruta,et al.  All-Optical OOK to 16-QAM Modulation Format Conversion Employing Nonlinear Optical Loop Mirror , 2012, Journal of Lightwave Technology.

[5]  W. Chujo,et al.  Ultrafast walk-off-free nonlinear optical loop mirror by a simplified configuration for 320-Gbit / s time-division multiplexing signal demultiplexing. , 2002, Optics letters.

[6]  Shoichiro Oda,et al.  A novel quantization scheme by slicing supercontinuum spectrum for all-optical analog-to-digital conversion , 2005 .

[7]  Soon Thor Lim,et al.  Broadband silicon polarization beam splitter with a high extinction ratio using a triple-bent-waveguide directional coupler. , 2017, Optics letters.

[8]  Siegfried Janz,et al.  All-optical switching using nonlinear subwavelength Mach-Zehnder on silicon. , 2011, Optics express.

[9]  M. Lipson,et al.  All-optical regeneration on a silicon chip. , 2007, Optics express.

[10]  Alan E. Willner,et al.  All-Optical Signal Processing , 2014, Journal of Lightwave Technology.

[11]  David J. Hagan,et al.  χ(2) cascading phenomena and their applications to all-optical signal processing, mode-locking, pulse compression and solitons , 1996 .

[12]  Songnian Fu,et al.  Reconfigurable UWB pulse generator based on pulse shaping in a nonlinear optical loop mirror and differential detection. , 2013, Optics express.

[13]  Peter A Andrekson,et al.  Silicon-rich nitride waveguides for ultra-broadband nonlinear signal processing. , 2017, Optics express.

[14]  Masahiko Jinno,et al.  Ultrafast, Low Power, and Highly Stable All-Optical Switching in an All Polarization Maintaining Fiber , 1990 .

[15]  Li Zhu,et al.  Very high efficiency optical coupler for silicon nanophotonic waveguide and single mode optical fiber. , 2017, Optics express.

[16]  S. Yoo.  Wavelength conversion technologies for WDM network applications , 1996 .

[17]  M. Lipson,et al.  Signal regeneration using low-power four-wave mixing on silicon chip , 2008 .

[18]  N. Doran,et al.  Nonlinear-optical loop mirror. , 1988, Optics letters.

[19]  Y. Ueno,et al.  168-Gb/s all-optical wavelength conversion with a symmetric-Mach-Zehnder-type switch , 2001, IEEE Photonics Technology Letters.

[20]  J. Leuthold,et al.  Nonlinear silicon photonics , 2010 .

[21]  Kresten Yvind,et al.  Fully etched apodized grating coupler on the SOI platform with -0.58 dB coupling efficiency. , 2014, Optics letters.

[22]  T Pinguet,et al.  A Grating-Coupler-Enabled CMOS Photonics Platform , 2011, IEEE Journal of Selected Topics in Quantum Electronics.

[23]  W M J Green,et al.  Tunable Wavelength Conversion by XPM in a Silicon Nanowire, and the Potential for XPM-Multicasting , 2010, Journal of Lightwave Technology.

[24]  Junqiang Sun,et al.  Photonic Generation of UWB Pulses Using a Nonlinear Optical Loop Mirror and Its Distribution Over a Fiber Link , 2011, IEEE Photonics Technology Letters.

[25]  M. Rochette,et al.  All-optical in-band OSNR monitoring at 40 Gb/s using a nonlinear optical loop mirror , 2006, IEEE Photonics Technology Letters.

[26]  Hao Hu,et al.  Silicon Photonics for Signal Processing of Tbit/s Serial Data Signals , 2012, IEEE Journal of Selected Topics in Quantum Electronics.

[27]  T. Sakamoto,et al.  All-optical wavelength conversion of 500-fs pulse trains by using a nonlinear-optical loop mirror composed of a highly nonlinear DSF , 2001, IEEE Photonics Technology Letters.

[28]  M. Scaffardi,et al.  All-optical regeneration and demultiplexing for 160-gb/s transmission systems using a NOLM-based three-stage scheme , 2004, IEEE Journal of Selected Topics in Quantum Electronics.

[29]  C Koos,et al.  Nonlinear silicon-on-insulator waveguides for all-optical signal processing. , 2007, Optics express.

[30]  C. Dorrer,et al.  RF spectrum analysis of optical signals using nonlinear optics , 2004, Journal of Lightwave Technology.

[31]  Peter A. Andrekson,et al.  Impact of 4D Channel Distribution on the Achievable Rates in Coherent Optical Communication Experiments , 2015, Journal of Lightwave Technology.

[32]  S Sekiguchi,et al.  All-Optical Wavelength Multicasting in a QD-SOA , 2011, IEEE Journal of Quantum Electronics.

[33]  Mihaela Dinu,et al.  Third-order nonlinearities in silicon at telecom wavelengths , 2003 .

[34]  B.-E. Olsson,et al.  All-optical demultiplexing using fiber cross-phase modulation (XPM) and optical filtering , 2001, IEEE Photonics Technology Letters.

[35]  Rhys Adams,et al.  Nanowires and sidewall Bragg gratings in silicon as enabling technologies for microwave photonic filters. , 2013, Optics express.

[36]  D.J. Blumenthal,et al.  WDM to OTDM multiplexing using an ultrafast all-optical wavelength converter , 2001, IEEE Photonics Technology Letters.

[37]  A. Maruta,et al.  All-optical digital-to-analog conversion using nonlinear optical loop mirrors , 2006, IEEE Photonics Technology Letters.

[38]  H Melchior,et al.  All-optical sampling with a monolithically integrated Mach-Zehnder interferometer gate. , 2001, Optics letters.

[39]  Barry Luther-Davies,et al.  Integrated all-optical pulse regenerator in chalcogenide waveguides. , 2005, Optics letters.

[40]  Ioannis Roudas,et al.  Coherent Optical Communication Systems , 2012 .

[41]  James G. Fujimoto,et al.  Femtosecond measurements of the nonresonant nonlinear index in AlGaAs , 1990 .