## Monolithic InP receiver chip with a 90° hybrid and 56 GHz balanced photodiodes |

Optics Express, Vol. 20, Issue 26, pp. B250-B255 (2012)

http://dx.doi.org/10.1364/OE.20.00B250

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### Abstract

We demonstrate a monolithically integrated quadrature coherent receiver photonic integrated curcuit on an InP substrate with a 90° optical hybrid and two balanced 56 GHz pin-photodetectors on chip level and as a packaged device. The presented devices enable the use of 56/64 Gbaud dual polarisation 16-QAM signals either in the C-band or the L-band.

© 2012 OSA

## 1. Introduction

1. C. R. Doerr, L. L. Buhl, Y. Baeyens, R. Aroca, S. Chandrasekhar, X. Liu, L. Chen, and Y.-K. Chen, “Packaged Monolithic Silicon 112 Gb/s Coherent Receiver,” IEEE Photon. Technol. Lett. **23**, 762–764 (2011). [CrossRef]

2. C. R. Doerr, L. Zhang, P. J. Winzer, N. Weimann, V. Houtsma, T.-C. Hu, N. J. Sauer, L. L. Buhl, D. T. Neilson, S. Chandrasekhar, and Y. K. Chen, “Monolithic InP Dual-Polarization and Dual-Quadrature Coherent Receiver,” IEEE Photon. Technol. Lett. **23**, 694–696 (2011). [CrossRef]

4. K. Murata, T. Saida, K. Sano, I. Ogawa, H. Fukuyama, R. Kasahara, Y. Muramoto, H. Nosaka, S. Tsunashima, T. Mizuno, H. Tanobe, K. Hattori, T. Yoshimatsu, H. Kawakami, and E. Yoshida, “100 Gbit/s PDM-QPSK Coherent Receiver with Wide Dynamic Range and Excellent Common-mode Rejection Ratio,” Proc. ECOC’11, Tu.3.LeSaleve.1 (2011).

1. C. R. Doerr, L. L. Buhl, Y. Baeyens, R. Aroca, S. Chandrasekhar, X. Liu, L. Chen, and Y.-K. Chen, “Packaged Monolithic Silicon 112 Gb/s Coherent Receiver,” IEEE Photon. Technol. Lett. **23**, 762–764 (2011). [CrossRef]

6. C. T. DeRose, D. C. Trotter, W. A. Zortman, A. L. Starbuck, M. Fisher, M. R. Watts, and P. S. Davids, “Ultra compact 45 GHz CMOS compatible Germanium waveguide photodiode with low dark current,” Opt. Express **19**, 24897–24904 (2011). [CrossRef]

## 2. Design and fabrication of the PIC

^{2}. The compact size results in a maximum skew between the different photodiode channels of only 0.2 ps.

## 3. Measurement results of the PIC

_{P}− I

_{N}and Q = Q

_{P}− Q

_{N}. Important parameters for the envisaged system operation can already be obtained from single fibre input measurements:

## 4. Design of the module

^{®}interface.

## 5. Measurement results of the module

## 6. Conclusion

## References and links

1. | C. R. Doerr, L. L. Buhl, Y. Baeyens, R. Aroca, S. Chandrasekhar, X. Liu, L. Chen, and Y.-K. Chen, “Packaged Monolithic Silicon 112 Gb/s Coherent Receiver,” IEEE Photon. Technol. Lett. |

2. | C. R. Doerr, L. Zhang, P. J. Winzer, N. Weimann, V. Houtsma, T.-C. Hu, N. J. Sauer, L. L. Buhl, D. T. Neilson, S. Chandrasekhar, and Y. K. Chen, “Monolithic InP Dual-Polarization and Dual-Quadrature Coherent Receiver,” IEEE Photon. Technol. Lett. |

3. | A. Beling, N. Ebel, A. Matiss, G. Unterbörsch, M. Nölle, J. K. Fischer, J. Hilt, L. Molle, C. Schubert, F. Verluise, and L. Fulop, “Fully-Integrated Polarization-Diversity Coherent Receiver Module for 100 G DP-QPSK,” Proc. OFC’11 , OML5 (2011). |

4. | K. Murata, T. Saida, K. Sano, I. Ogawa, H. Fukuyama, R. Kasahara, Y. Muramoto, H. Nosaka, S. Tsunashima, T. Mizuno, H. Tanobe, K. Hattori, T. Yoshimatsu, H. Kawakami, and E. Yoshida, “100 Gbit/s PDM-QPSK Coherent Receiver with Wide Dynamic Range and Excellent Common-mode Rejection Ratio,” Proc. ECOC’11, Tu.3.LeSaleve.1 (2011). |

5. | T. Richter, M. Kroh, J. Wang, A. Theurer, C. Zawadzki, Z. Zhang, N. Keil, A. Steffan, and C. Schubert, “Integrated Polarization-Diversity Coherent Receiver on Polymer PLC for QPSK and QAM signals,” Proc. OFC’12, OW3G.1 (2012). |

6. | C. T. DeRose, D. C. Trotter, W. A. Zortman, A. L. Starbuck, M. Fisher, M. R. Watts, and P. S. Davids, “Ultra compact 45 GHz CMOS compatible Germanium waveguide photodiode with low dark current,” Opt. Express |

7. | H. Nishi, T. Tsuchizawa, R. Kou, H. Shinojima, K. Yamada, T. Yamada, H. Kimura, Y. Ishikawa, K. Wada, and S. Mutoh, “Monolithic integration of silica-based AWG filter and germanium photodiodes for one-chip WDM receiver,” Proc. OFC’12, OW3G.6 (2012). |

**OCIS Codes**

(040.5160) Detectors : Photodetectors

(060.1660) Fiber optics and optical communications : Coherent communications

(250.3140) Optoelectronics : Integrated optoelectronic circuits

**ToC Category:**

Waveguide and Optoelectronic Devices

**History**

Original Manuscript: October 1, 2012

Revised Manuscript: November 1, 2012

Manuscript Accepted: November 1, 2012

Published: November 29, 2012

**Virtual Issues**

European Conference on Optical Communication 2012 (2012) *Optics Express*

**Citation**

Patrick Runge, Stefan Schubert, Angela Seeger, Klemens Janiak, Jens Stephan, Dirk Trommer, Patrick Domburg, and Mads Lønstrup Nielsen, "Monolithic InP receiver chip with a 90° hybrid and 56 GHz balanced photodiodes," Opt. Express **20**, B250-B255 (2012)

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-26-B250

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### References

- C. R. Doerr, L. L. Buhl, Y. Baeyens, R. Aroca, S. Chandrasekhar, X. Liu, L. Chen, and Y.-K. Chen, “Packaged Monolithic Silicon 112 Gb/s Coherent Receiver,” IEEE Photon. Technol. Lett.23, 762–764 (2011). [CrossRef]
- C. R. Doerr, L. Zhang, P. J. Winzer, N. Weimann, V. Houtsma, T.-C. Hu, N. J. Sauer, L. L. Buhl, D. T. Neilson, S. Chandrasekhar, and Y. K. Chen, “Monolithic InP Dual-Polarization and Dual-Quadrature Coherent Receiver,” IEEE Photon. Technol. Lett.23, 694–696 (2011). [CrossRef]
- A. Beling, N. Ebel, A. Matiss, G. Unterbörsch, M. Nölle, J. K. Fischer, J. Hilt, L. Molle, C. Schubert, F. Verluise, and L. Fulop, “Fully-Integrated Polarization-Diversity Coherent Receiver Module for 100 G DP-QPSK,” Proc. OFC’11, OML5 (2011).
- K. Murata, T. Saida, K. Sano, I. Ogawa, H. Fukuyama, R. Kasahara, Y. Muramoto, H. Nosaka, S. Tsunashima, T. Mizuno, H. Tanobe, K. Hattori, T. Yoshimatsu, H. Kawakami, and E. Yoshida, “100 Gbit/s PDM-QPSK Coherent Receiver with Wide Dynamic Range and Excellent Common-mode Rejection Ratio,” Proc. ECOC’11, Tu.3.LeSaleve.1 (2011).
- T. Richter, M. Kroh, J. Wang, A. Theurer, C. Zawadzki, Z. Zhang, N. Keil, A. Steffan, and C. Schubert, “Integrated Polarization-Diversity Coherent Receiver on Polymer PLC for QPSK and QAM signals,” Proc. OFC’12, OW3G.1 (2012).
- C. T. DeRose, D. C. Trotter, W. A. Zortman, A. L. Starbuck, M. Fisher, M. R. Watts, and P. S. Davids, “Ultra compact 45 GHz CMOS compatible Germanium waveguide photodiode with low dark current,” Opt. Express19, 24897–24904 (2011). [CrossRef]
- H. Nishi, T. Tsuchizawa, R. Kou, H. Shinojima, K. Yamada, T. Yamada, H. Kimura, Y. Ishikawa, K. Wada, and S. Mutoh, “Monolithic integration of silica-based AWG filter and germanium photodiodes for one-chip WDM receiver,” Proc. OFC’12, OW3G.6 (2012).

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