Performance improvement of directly modulated semiconductor optical amplifier with filter‐assisted birefringent fiber loop

We propose to use an optical bandpass filter (OBPF) placed after a birefringent fiber loop (BFL) to improve the performance of a semiconductor optical amplifier (SOA), which is directly modulated at an extended data rate than that enabled by its limited modulation bandwidth. The OBPF complements the BFL action by being detuned toward the opposite sideband than the BFL. The obtained experimental results demonstrate and confirm that compared with the BFL only, the filter-assisted BFL scheme can further reduce the chirp and pulse peak amplitude variations, reshape the eye diagram, and make more symmetric and narrow the spectrum of the encoded data signal after the SOA. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2247–2251, 2015

[1]  Shanguo Huang,et al.  Suppression of pattern dependence in 10 Gbps upstream transmission of WDM-PON with RSOA-based ONUs , 2013 .

[2]  H. de Waardt,et al.  Modeling and performance analysis of WDM transmission links employing semiconductor optical amplifiers , 2001 .

[3]  Ernesto Ciaramella,et al.  40 Gb/s Single R-SOA Transmission by Optical Equalization and Adaptive OFDM , 2013, IEEE Photonics Technology Letters.

[4]  Kyriakos E. Zoiros,et al.  Enhanced performance of semiconductor optical amplifier at high direct modulation speed with birefringent fiber loop , 2014 .

[5]  Yong Zhao,et al.  RECENT DEVELOPMENTS AND APPLICATIONS OF POLARIZATION-MAINTAINING FIBER LOOP MIRRORS , 2012 .

[6]  L. D. Tzeng,et al.  38.5 km error free transmission at 10 Gbit/s in standard fibre using a low chirp, spectrally filtered, directly modulated 1.55 /spl mu/m DFB laser , 1997 .

[7]  Hiroki Takesue,et al.  Wavelength channel data rewrite using saturated SOA modulator for WDM networks with centralized light sources , 2003 .

[8]  Hoon Kim,et al.  10-Gb/s Operation of RSOA Using a Delay Interferometer , 2010, IEEE Photonics Technology Letters.

[9]  Lei Liu,et al.  10-Gbps uplink transmission in WDM-PON with RSOA-based Colorless ONUs and MZI-based equalizers , 2012, 2012 Conference on Lasers and Electro-Optics (CLEO).

[10]  A. Willner,et al.  Reach extension in 10-Gb/s directly modulated transmission systems using asymmetric and narrowband optical filtering. , 2005, Optics express.

[11]  I. Tomkos,et al.  Performance Improvement of Low-Cost 2.5-Gb/s Rated DML Sources Operated at 10 Gb/s , 2008, IEEE Photonics Technology Letters.

[12]  E Udvary,et al.  Improvements in the Linearity of Semiconductor Optical Amplifiers as External Modulators , 2010, IEEE Transactions on Microwave Theory and Techniques.

[13]  L.H. Spiekman,et al.  Amplifiers for the masses: EDFA, EDWA, and SOA amplets for metro and access applications , 2004, Journal of Lightwave Technology.

[14]  Junqiang Sun,et al.  Noise Suppression Mechanisms in Regenerators Based on XGC in an SOA With Subsequent Optical Filtering , 2012, IEEE Journal of Selected Topics in Quantum Electronics.

[15]  J. Capmany,et al.  Optical mixing of microwave signals in a nonlinear semiconductor laser amplifier modulator. , 2002, Optics express.

[17]  M.A. Ali,et al.  Performance analysis of multichannel 16/64-QAM CATV distribution network using semiconductor optical amplifier as an external modulator , 1997, IEEE Photonics Technology Letters.

[18]  Jesper Mørk,et al.  The modulation response of a semiconductor laser amplifier , 1999 .