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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 26 — Dec. 10, 2012
  • pp: B552–B557
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Directly modulated and fully tunable hybrid silicon lasers for future generation of coherent colorless ONU

G. de Valicourt, A. Le Liepvre, F. Vacondio, C. Simonneau, M. Lamponi, C. Jany, A. Accard, F. Lelarge, D. Make, F. Poingt, G. H. Duan, J.-M. Fedeli, S. Messaoudene, D. Bordel, L. Lorcy, J.-C. Antona, and S. Bigo  »View Author Affiliations


Optics Express, Vol. 20, Issue 26, pp. B552-B557 (2012)
http://dx.doi.org/10.1364/OE.20.00B552


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Abstract

We propose and demonstrate asymmetric 10 Gbit/s upstream - 100 Gbit/s downstream per wavelength colorless WDM/TDM PON using a novel hybrid-silicon chip integrating two tunable lasers. The first laser is directly modulated in burst mode for upstream transmission over up to 25 km of standard single mode fiber and error free transmission over 4 channels across the C-band is demonstrated. The second tunable laser is successfully used as local oscillator in a coherent receiver across the C-band simultaneously operating with the presence of 80 downstream co-channels.

© 2012 OSA

1. Introduction

Two such lasers are integrated into a single chip and mounted on a high frequency submount and connected to one strip line using wire bonding. We demonstrate the generation of 10 Gbit/s non return to zero (NRZ) optical packets as upstream signals by simple direct modulation of the current of one laser, while the second laser serves as a local oscillator. The local oscillator is successfully used for the coherent detection of a 100 Gbit/s polarization division multiplexed (PDM) quadrature phase shift keying (QPSK) downstream signal out of 80 channels. We incorporate the ONU into a hybrid WDM/TDM PON and demonstrate transmission over 25km distance, over the full C-band.

2. Network description and experimental set-up

3. Coherent colorless ONU

3.1 Hybrid silicon sources

3.2 Directly modulated tunable lasers

3.3 Local oscillator characteristics

First, we characterize the laser phase noise using the coherent receiver [15

15. R. Maher and B. Thomsen, “Dynamic linewidth measurement technique using digital intradyne coherent receivers,” Opt. Express 19(26), B313–B322 (2011). [CrossRef] [PubMed]

]. To do so, the laser under test beats with a continuous wave narrow linewidth (< 300kHz) external cavity laser. Figure 2(a)
Fig. 2 (a) Power spectral density of coherently received signal complex field with a Lorentzian fit and (b) Frequency noise spectrum.
shows the power spectral density (PSD) of the recovered field, centered on the offset frequency. A Lorenzian best fit to the measured data is also shown. The full width half maximum of the Lorenzian shape is 2.3 MHz, which corresponds to the linewidth of the laser under test. Thanks to the carrier phase recovery mechanisms, coherent receivers are capable of tracking the low frequency components of the phase noise. It is therefore interesting to look at the PSD of the frequency noise, shown in Fig. 2(b). As it can be seen, the frequency noise appears white in frequency; we therefore expect this laser should interact with the coherent receiver similarly to more commonly used III-V lasers.

4. Transmission experiments

4.1Upstream transmission

Throughout the paper, we assume that upstream and downstream wavelengths never coincide and we leave the allocation plans open to standard bodies. As described in section 3.2, we generate 10 Gbit/s optical packets. The packets payloads contain 29-1 NRZ PRBS modulated at 10 Gbit/s (in-band FEC assumed) and the total packet length is 5 µs. The guard band between each optical packet is 200 ns long. The optical packet is represented in the inset of Fig. 3(b)
Fig. 3 (a) Back-to-back BER measurements and eye diagrams at λ = 1526.6, 1539.7, 1544 and 1548.44 nm and (b) Power sensitivity packets based on direct detection (upstream signal) at 1544 nm for 10Gbit/s NRZ optical signals.
. We report the measured the bit-error rate (BER) versus the received power in Fig. 3(b) for the upstream in single-channel configurations at 1544 nm. Using optimized electrical drivers, an improved power sensitivity of −21 dBm at BER of 10−3 is obtained after upstream transmission in B2B at 1544 nm. After 25km link, penalties no larger than 2.5 dB are measured, mainly caused by chromatic dispersion. Reach was also limited by the low input optical power (~-5dBm) into the optical fiber. Adequate packaging will reduce coupling loss and increase the available power budget for the PON splitters.

4.2 Downstream colorless and filterless operation

7. Conclusion

We demonstrate a novel colorless and coherent ONU for access networks which incorporates a dual-laser chip based on hybrid III-V/Silicon technology. The hybrid Silicon lasers allow single mode operation and wavelength tunability over 45nm exploiting silicon ring resonators thermo-optical effect. We showed the excellent performances of hybrid silicon lasers as LO and directly modulated upstream transmitter. We integrated the ONU into a hybrid WDM/TDM PON with 10 Gbit/s NRZ upstream optical packets and 100 Gbit/s PDM-QPSK downstream circuit data. This network operates over the C-band and up to 25 km. For the downstream signal, no penalty is observed when increasing the number of neighbour channels allowing filterless operation. Low cost optical devices such as directly modulated tunable lasers and coherent receivers including the local oscillator could be fabricated and integrated together paving the way for the future of WDM access network. Our result constitutes an important milestone toward a fully integrated hybrid III-V/silicon colorless ONU transceiver.

Acknowledgments

This work was supported in part by the French ANR project MICROS.

References and links

1.

F. T. An, K. S. Kim, D. Gutierrez, S. Yam, E. Hu, K. Shrikhande, and L. G. Kazovsky, “SUCCESS: A next-generation hybrid WDM/TDM optical access network architecture,” J. Lightwave Technol. 22(11), 2557–2569 (2004). [CrossRef]

2.

M. J. Wale, “Options and trends for PON tunable optical transceivers,” in Proceeding of European Conference on Optical Communication (2011), paper Mo.2.C.1.

3.

W. Hung, C.-K. Chan, L.-K. Chen, and F. Tong, “An optical network unit for WDM access networks with downstream DPSK and upstream remodulated OOK data using injection-locked FP laser,” IEEE Photon. Technol. Lett. 15(10), 1476–1478 (2003). [CrossRef]

4.

A. Garreau, J. Decobert, C. Kazmierski, M.-C. Cuisin, J.-G. Provost, H. Sillard, F. Blache, D. Carpentier, J. Landreau, and P. Chanclou, “10Gbit/s amplified reflective electroabsorption modulator for colourless access networks,” in Proceeding of Indium Phosphide and Related Materials (2006), paper TuA2.3.

5.

G. de Valicourt, D. Make, M. Lamponi, G. Duan, P. Chanclou, and R. Brenot, “High gain (30 dB) and high saturation power (11dBm) RSOA devices as colourless ONU sources in long reach hybrid WDM/TDM -PON architecture,” IEEE Photon. Technol. Lett. 22(3), 191–193 (2010). [CrossRef]

6.

S. Smolorz, E. Gottwald, H. Rohde, D. Smith, and A. Poustie, “Demonstration of a coherent UDWDM-PON with real-time processing,” in Proceeding of European Conference on Optical Communication (2011), paper PDPD4.

7.

C. R. Doerr, P. J. Winzer, S. Chandrasekhar, M. Rasras, M. Earnshaw, J. Weiner, D. M. Gill, and Y. K. Chen, “Monolithic coherent receiver,” in Proceeding of European Conference on Optical Communication (2009), paper PDPB2.

8.

A. Le Liepvre, C. Jany, A. Accard, M. Lamponi, F. Poingt, D. Make, F. Lelarge, J.-M. Fedeli, S. Messaoudene, D. Bordel, and G.-H. Duan, “Widely wavelength tunable hybrid III-V/silicon laser with 45 nm tuning range fabricated using a wafer bonding technique,” in Proceeding of Group IV Photonics (2012), paper WC3.

9.

G. de Valicourt, A. Leliepre, F. Vacondio, C. Simonneau, C. Jany, A. Accard, F. Lelarge, M. Lamponi, D. Make, F. Poingt, G. H. Duan, J.-M. Fedeli, S. Messaoudene, D. Bordel, L. Lorcy, J.-C. Antona, and S. Bigo, “Coherent colorless ONU with fully tunable hybrid III-V/silicon lasers allowing 100 Gbit/s flexible WDM/TDM access network,” in Proceeding of European Conference and Exhibition on Optical Communication (2012), paper Th.3.D.4.

10.

R. Glatty, P. Guignard, and P. Chanclou, “Flexibility in access networks: a novel WDMA/TDMA scheme for passive optical networks,” in Proceeding of Optical Fiber Communication (2007), paper JThA77.

11.

G.-H. Duan, C. Jan, A. Le Liepvre, M. Lamponi, A. Accar, F. Poing, D. Make, F. Lelarge, S. Messaoudene, D. Bordel, J.-M. Fedeli, S. Keyvaninia, G. Roelkens, D. Van Thourhout, D. J. Thomson, F. Y. Gardes, and G. T. Reed, “Integrated hybrid III-V/si laser and transmitter,” in Proceeding of Indium Phosphide and Related Materials (2012), paper Mo-1C.3.

12.

M. Lamponi, S. Keyvaninia, C. Jany, F. Poingt, F. Lelarge, G. de Valicourt, G. Roelkens, D. Van Thourhout, S. Messaoudene, J.-M. Fedeli, and G. H. Duan, “Low-thershold heterogeneously integrated InP/SOI laser with a double adiabatic taper coupler,” IEEE Photon. Technol. Lett. 24(1), 76–78 (2012). [CrossRef]

13.

http://www.fsan.org/

14.

F. Vacondio, O. Rival, Y. Pointurier, C. Simonneau, L. Lorcy, J.-C. Antona, and S. Bigo, “Coherent receiver enabling data rate adaptive optical packet networks,” in Proceeding of European Conference and Exhibition on Optical Communication (2011), paper Mo.2.A.4.

15.

R. Maher and B. Thomsen, “Dynamic linewidth measurement technique using digital intradyne coherent receivers,” Opt. Express 19(26), B313–B322 (2011). [CrossRef] [PubMed]

16.

A. Morea, S. Spadaro, O. Rival, J. Perelló, F. Agraz, and D. Verchere, “Power management of optoelectronic interfaces for dynamic optical networks,” in Proceeding of European Conference and Exhibition on Optical Communication (2011), paper We.8.K.3.

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.0250) Optical devices : Optoelectronics
(230.3120) Optical devices : Integrated optics devices

ToC Category:
Access Networks and LAN

History
Original Manuscript: October 16, 2012
Revised Manuscript: November 23, 2012
Manuscript Accepted: November 26, 2012
Published: December 6, 2012

Virtual Issues
European Conference on Optical Communication 2012 (2012) Optics Express

Citation
G. de Valicourt, A. Le Liepvre, F. Vacondio, C. Simonneau, M. Lamponi, C. Jany, A. Accard, F. Lelarge, D. Make, F. Poingt, G. H. Duan, J.-M. Fedeli, S. Messaoudene, D. Bordel, L. Lorcy, J.-C. Antona, and S. Bigo, "Directly modulated and fully tunable hybrid silicon lasers for future generation of coherent colorless ONU," Opt. Express 20, B552-B557 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-26-B552


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References

  1. F. T. An, K. S. Kim, D. Gutierrez, S. Yam, E. Hu, K. Shrikhande, and L. G. Kazovsky, “SUCCESS: A next-generation hybrid WDM/TDM optical access network architecture,” J. Lightwave Technol.22(11), 2557–2569 (2004). [CrossRef]
  2. M. J. Wale, “Options and trends for PON tunable optical transceivers,” in Proceeding of European Conference on Optical Communication (2011), paper Mo.2.C.1.
  3. W. Hung, C.-K. Chan, L.-K. Chen, and F. Tong, “An optical network unit for WDM access networks with downstream DPSK and upstream remodulated OOK data using injection-locked FP laser,” IEEE Photon. Technol. Lett.15(10), 1476–1478 (2003). [CrossRef]
  4. A. Garreau, J. Decobert, C. Kazmierski, M.-C. Cuisin, J.-G. Provost, H. Sillard, F. Blache, D. Carpentier, J. Landreau, and P. Chanclou, “10Gbit/s amplified reflective electroabsorption modulator for colourless access networks,” in Proceeding of Indium Phosphide and Related Materials (2006), paper TuA2.3.
  5. G. de Valicourt, D. Make, M. Lamponi, G. Duan, P. Chanclou, and R. Brenot, “High gain (30 dB) and high saturation power (11dBm) RSOA devices as colourless ONU sources in long reach hybrid WDM/TDM -PON architecture,” IEEE Photon. Technol. Lett.22(3), 191–193 (2010). [CrossRef]
  6. S. Smolorz, E. Gottwald, H. Rohde, D. Smith, and A. Poustie, “Demonstration of a coherent UDWDM-PON with real-time processing,” in Proceeding of European Conference on Optical Communication (2011), paper PDPD4.
  7. C. R. Doerr, P. J. Winzer, S. Chandrasekhar, M. Rasras, M. Earnshaw, J. Weiner, D. M. Gill, and Y. K. Chen, “Monolithic coherent receiver,” in Proceeding of European Conference on Optical Communication (2009), paper PDPB2.
  8. A. Le Liepvre, C. Jany, A. Accard, M. Lamponi, F. Poingt, D. Make, F. Lelarge, J.-M. Fedeli, S. Messaoudene, D. Bordel, and G.-H. Duan, “Widely wavelength tunable hybrid III-V/silicon laser with 45 nm tuning range fabricated using a wafer bonding technique,” in Proceeding of Group IV Photonics (2012), paper WC3.
  9. G. de Valicourt, A. Leliepre, F. Vacondio, C. Simonneau, C. Jany, A. Accard, F. Lelarge, M. Lamponi, D. Make, F. Poingt, G. H. Duan, J.-M. Fedeli, S. Messaoudene, D. Bordel, L. Lorcy, J.-C. Antona, and S. Bigo, “Coherent colorless ONU with fully tunable hybrid III-V/silicon lasers allowing 100 Gbit/s flexible WDM/TDM access network,” in Proceeding of European Conference and Exhibition on Optical Communication (2012), paper Th.3.D.4.
  10. R. Glatty, P. Guignard, and P. Chanclou, “Flexibility in access networks: a novel WDMA/TDMA scheme for passive optical networks,” in Proceeding of Optical Fiber Communication (2007), paper JThA77.
  11. G.-H. Duan, C. Jan, A. Le Liepvre, M. Lamponi, A. Accar, F. Poing, D. Make, F. Lelarge, S. Messaoudene, D. Bordel, J.-M. Fedeli, S. Keyvaninia, G. Roelkens, D. Van Thourhout, D. J. Thomson, F. Y. Gardes, and G. T. Reed, “Integrated hybrid III-V/si laser and transmitter,” in Proceeding of Indium Phosphide and Related Materials (2012), paper Mo-1C.3.
  12. M. Lamponi, S. Keyvaninia, C. Jany, F. Poingt, F. Lelarge, G. de Valicourt, G. Roelkens, D. Van Thourhout, S. Messaoudene, J.-M. Fedeli, and G. H. Duan, “Low-thershold heterogeneously integrated InP/SOI laser with a double adiabatic taper coupler,” IEEE Photon. Technol. Lett.24(1), 76–78 (2012). [CrossRef]
  13. http://www.fsan.org/
  14. F. Vacondio, O. Rival, Y. Pointurier, C. Simonneau, L. Lorcy, J.-C. Antona, and S. Bigo, “Coherent receiver enabling data rate adaptive optical packet networks,” in Proceeding of European Conference and Exhibition on Optical Communication (2011), paper Mo.2.A.4.
  15. R. Maher and B. Thomsen, “Dynamic linewidth measurement technique using digital intradyne coherent receivers,” Opt. Express19(26), B313–B322 (2011). [CrossRef] [PubMed]
  16. A. Morea, S. Spadaro, O. Rival, J. Perelló, F. Agraz, and D. Verchere, “Power management of optoelectronic interfaces for dynamic optical networks,” in Proceeding of European Conference and Exhibition on Optical Communication (2011), paper We.8.K.3.

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