Abstract

We demonstrate an integrated tunable optical delay line in grating-assisted contradirectional couplers using a CMOS-compatible photonic technology. The input signal is delayed through dispersive Bragg gratings and distributedly coupled to the drop port of the coupler without backreflections. This add–drop design enables monolithic integration of grating-based delay lines without using optical circulators. The gratings are formed by slab perturbations in rib waveguides, with the index chirping realized by linearly tapering the rib widths. Both the pitch and size of the gratings are constant through the entire coupler, for a higher tolerance to fabrication errors. Continuous tuning of the optical group delay of up to 96 ps has been obtained, with a low insertion loss of less than 2 dB and a negative chromatic dispersion of 11ps/nm that allows for bit rates of up to almost 100Gb/s at the maximal delay. The device has a small footprint of 0.015mm2, and can be used for on-chip optical buffering, dispersion compensation, and pulse compression.

© 2014 Optical Society of America

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2013 (3)

2012 (5)

I. Giuntoni, D. Stolarek, D. I. Kroushkov, J. Bruns, L. Zimmermann, B. Tillack, and K. Petermann, Opt. Express 20, 11241 (2012).
[CrossRef]

X. Wang, W. Shi, H. Yun, S. Grist, N. A. F. Jaeger, and L. Chrostowski, Opt. Express 20, 15547 (2012).
[CrossRef]

P. A. Morton, J. Cardenas, J. B. Khurgin, and M. Lipson, IEEE Photon. Technol. Lett. 24, 512 (2012).
[CrossRef]

A. D. Simard, N. Belhadj, Y. Painchaud, and S. LaRochelle, IEEE Photon. Technol. Lett. 24, 1033 (2012).
[CrossRef]

J. Yao, IEEE Photon. Soc. Newslett. 26(3), 5 (2012).

2011 (3)

2010 (4)

P. Dong, W. Qian, H. Liang, R. Shafiiha, D. Feng, G. Li, J. E. Cunningham, A. V. Krishnamoorthy, and M. Asghari, Opt. Express 18, 20298 (2010).
[CrossRef]

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

G. T. Reed, G. Mashanovich, F. Y. Gardes, and D. J. Thomson, Nat. Photonics 4, 518 (2010).
[CrossRef]

D. T. H. Tan, P. Sun, and Y. Fainman, Nat. Commun. 1, 116 (2010).
[CrossRef]

2007 (2)

Y. Painchaud, C. Paquet, and M. Guy, Opt. Photon. News 18(9), 48 (2007).
[CrossRef]

F. Xia, L. Sekaric, and Y. Vlasov, Nat. Photonics 1, 65 (2007).
[CrossRef]

Asghari, M.

Baehr-Jones, T.

Baghban, M. A.

Belhadj, N.

A. D. Simard, N. Belhadj, Y. Painchaud, and S. LaRochelle, IEEE Photon. Technol. Lett. 24, 1033 (2012).
[CrossRef]

Bogaerts, W.

W. Bogaerts and S. Selvaraja, IEEE Photon. J. 3, 422 (2011).
[CrossRef]

Bruns, J.

Canciamilla, A.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Cardenas, J.

P. A. Morton, J. Cardenas, J. B. Khurgin, and M. Lipson, IEEE Photon. Technol. Lett. 24, 512 (2012).
[CrossRef]

Chen, L. R.

M. Spasojevic and L. R. Chen, Electron. Lett. 49, 608 (2013).
[CrossRef]

Chrostowski, L.

Cunningham, J. E.

De La Rue, R.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Dong, P.

Fainman, Y.

D. T. H. Tan, P. Sun, and Y. Fainman, Nat. Commun. 1, 116 (2010).
[CrossRef]

Fathpour, S.

Feng, D.

Ferrari, C.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Flueckiger, J.

Gardes, F. Y.

G. T. Reed, G. Mashanovich, F. Y. Gardes, and D. J. Thomson, Nat. Photonics 4, 518 (2010).
[CrossRef]

Giuntoni, I.

Grist, S.

Guy, M.

Y. Painchaud, C. Paquet, and M. Guy, Opt. Photon. News 18(9), 48 (2007).
[CrossRef]

Hochberg, M.

Jaeger, N. A. F.

Kaminow, I.

I. Kaminow and T. Li, Optical Fiber Telecommunications IV-B: Systems and Impairments (Academic, 2002).

Khan, S.

Khurgin, J. B.

P. A. Morton, J. Cardenas, J. B. Khurgin, and M. Lipson, IEEE Photon. Technol. Lett. 24, 512 (2012).
[CrossRef]

Krauss, T.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Krishnamoorthy, A. V.

Kroushkov, D. I.

LaRochelle, S.

A. D. Simard, N. Belhadj, Y. Painchaud, and S. LaRochelle, IEEE Photon. Technol. Lett. 24, 1033 (2012).
[CrossRef]

Li, G.

Li, T.

I. Kaminow and T. Li, Optical Fiber Telecommunications IV-B: Systems and Impairments (Academic, 2002).

Liang, H.

Lin, C.

Lipson, M.

P. A. Morton, J. Cardenas, J. B. Khurgin, and M. Lipson, IEEE Photon. Technol. Lett. 24, 512 (2012).
[CrossRef]

Liu, Y.

Mashanovich, G.

G. T. Reed, G. Mashanovich, F. Y. Gardes, and D. J. Thomson, Nat. Photonics 4, 518 (2010).
[CrossRef]

Melloni, A.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Morichetti, F.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Morton, P. A.

P. A. Morton, J. Cardenas, J. B. Khurgin, and M. Lipson, IEEE Photon. Technol. Lett. 24, 512 (2012).
[CrossRef]

O’Faolain, L.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Painchaud, Y.

A. D. Simard, N. Belhadj, Y. Painchaud, and S. LaRochelle, IEEE Photon. Technol. Lett. 24, 1033 (2012).
[CrossRef]

Y. Painchaud, C. Paquet, and M. Guy, Opt. Photon. News 18(9), 48 (2007).
[CrossRef]

Paquet, C.

Y. Painchaud, C. Paquet, and M. Guy, Opt. Photon. News 18(9), 48 (2007).
[CrossRef]

Petermann, K.

Qian, W.

Reed, G. T.

G. T. Reed, G. Mashanovich, F. Y. Gardes, and D. J. Thomson, Nat. Photonics 4, 518 (2010).
[CrossRef]

Samarelli, A.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Sekaric, L.

F. Xia, L. Sekaric, and Y. Vlasov, Nat. Photonics 1, 65 (2007).
[CrossRef]

Selvaraja, S.

W. Bogaerts and S. Selvaraja, IEEE Photon. J. 3, 422 (2011).
[CrossRef]

Shafiiha, R.

Shi, W.

Simard, A. D.

A. D. Simard, N. Belhadj, Y. Painchaud, and S. LaRochelle, IEEE Photon. Technol. Lett. 24, 1033 (2012).
[CrossRef]

Sorel, M.

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

Spasojevic, M.

M. Spasojevic and L. R. Chen, Electron. Lett. 49, 608 (2013).
[CrossRef]

Stolarek, D.

Sun, P.

D. T. H. Tan, P. Sun, and Y. Fainman, Nat. Commun. 1, 116 (2010).
[CrossRef]

Tan, D. T. H.

D. T. H. Tan, P. Sun, and Y. Fainman, Nat. Commun. 1, 116 (2010).
[CrossRef]

Thomson, D. J.

G. T. Reed, G. Mashanovich, F. Y. Gardes, and D. J. Thomson, Nat. Photonics 4, 518 (2010).
[CrossRef]

Tillack, B.

Vlasov, Y.

F. Xia, L. Sekaric, and Y. Vlasov, Nat. Photonics 1, 65 (2007).
[CrossRef]

Wang, X.

Xia, F.

F. Xia, L. Sekaric, and Y. Vlasov, Nat. Photonics 1, 65 (2007).
[CrossRef]

Yao, J.

J. Yao, IEEE Photon. Soc. Newslett. 26(3), 5 (2012).

Yun, H.

Zhang, W.

Zimmermann, L.

Electron. Lett. (1)

M. Spasojevic and L. R. Chen, Electron. Lett. 49, 608 (2013).
[CrossRef]

IEEE Photon. J. (2)

A. Melloni, A. Canciamilla, C. Ferrari, F. Morichetti, L. O’Faolain, T. Krauss, R. De La Rue, A. Samarelli, and M. Sorel, IEEE Photon. J. 2, 181 (2010).
[CrossRef]

W. Bogaerts and S. Selvaraja, IEEE Photon. J. 3, 422 (2011).
[CrossRef]

IEEE Photon. Soc. Newslett. (1)

J. Yao, IEEE Photon. Soc. Newslett. 26(3), 5 (2012).

IEEE Photon. Technol. Lett. (2)

P. A. Morton, J. Cardenas, J. B. Khurgin, and M. Lipson, IEEE Photon. Technol. Lett. 24, 512 (2012).
[CrossRef]

A. D. Simard, N. Belhadj, Y. Painchaud, and S. LaRochelle, IEEE Photon. Technol. Lett. 24, 1033 (2012).
[CrossRef]

Nat. Commun. (1)

D. T. H. Tan, P. Sun, and Y. Fainman, Nat. Commun. 1, 116 (2010).
[CrossRef]

Nat. Photonics (2)

G. T. Reed, G. Mashanovich, F. Y. Gardes, and D. J. Thomson, Nat. Photonics 4, 518 (2010).
[CrossRef]

F. Xia, L. Sekaric, and Y. Vlasov, Nat. Photonics 1, 65 (2007).
[CrossRef]

Opt. Express (5)

Opt. Lett. (2)

Opt. Photon. News (1)

Y. Painchaud, C. Paquet, and M. Guy, Opt. Photon. News 18(9), 48 (2007).
[CrossRef]

Other (1)

I. Kaminow and T. Li, Optical Fiber Telecommunications IV-B: Systems and Impairments (Academic, 2002).

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Figures (4)

Fig. 1.
Fig. 1.

Schematic of the tunable optical delay line using contra-DCs in rib waveguides with uniform Bragg gratings: (a) perspective view and (b) top view.

Fig. 2.
Fig. 2.

Calculated transmission and group delay of the proposed photonic delay line.

Fig. 3.
Fig. 3.

Measured transmission and group delay of the proposed photonic delay line.

Fig. 4.
Fig. 4.

Measured spectrum shift and group delay at 1565.3 nm, as a function of the applied voltage.

Equations (1)

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Bmax(inGb/s)=105|D|·L,

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