Abstract

A two-mode (de)multiplexer based on adiabatic couplers is proposed and experimentally demonstrated. The experimental results are in good agreement with the simulations. An ultralow mode cross talk below 36dB and a low insertion loss of about 0.3 dB over a broad bandwidth from 1500 to 1600 nm are measured. The design is also fabrication-tolerant, and the insertion loss can be further improved in the future.

© 2013 Optical Society of America

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References

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2013 (3)

2012 (2)

2009 (1)

2005 (1)

1998 (1)

Dai, D. X.

Ding, Y. H.

Greenberg, M.

Huang, B.

Ishizaka, Y.

Kawaguchi, Y.

Koshiba, M.

Li, Z. Y.

Liu, H. C.

Orenstein, M.

Osgood, R. M.

Ou, H. Y.

Peucheret, C.

Ramadan, T. A.

Ros, F. D.

Saitoh, K.

Scarmozzino, R.

Shi, Y. C.

Sun, X. K.

Uematsu, T.

Vlasov, Y. A.

Y. A. Vlasov, IEEE Commun. Mag. 50, S67 (2012).
[CrossRef]

Wang, J.

Xiao, X.

Xing, J. J.

Xiong, K.

Xu, H.

Xu, J.

Yariv, A.

Yu, J. Z.

Yu, Y. D.

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Figures (5)

Fig. 1.
Fig. 1.

(a) Schematic drawing of the proposed two-mode (DE)MUX and (b) effective index as a function of the propagation position in mode MUX at a wavelength of 1550 nm when L=300μm.

Fig. 2.
Fig. 2.

(a) Simulated mode cross talk as a function of mode (DE)MUX length at a wavelength of 1550 nm and (b) simulated mode cross talk and insertion loss as a function of wavelength when L=300μm.

Fig. 3.
Fig. 3.

Simulated mode cross talk as a function of (a) G and (b) slab height at a wavelength of 1550 nm when L=300μm.

Fig. 4.
Fig. 4.

SEM and microscope views of the fabricated devices.

Fig. 5.
Fig. 5.

(a) Measured mode cross talk and insertion loss of both paths as a function of wavelength. (b) Measured insertion loss of cascaded devices as a function of wavelength for path 1–1. (c) Fitted insertion loss at a wavelength of 1550 nm.

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