Tan DTH, Ikeda K, Zamek S, Mizrahi A, Nezhad MP, Krishnamoorthy AV, Raj K, Cunningham JE, Zheng X, Shubin I, Luo Y, Fainman Y. Wide bandwidth, low loss 1 by 4 wavelength division multiplexer on silicon for optical interconnects.
Opt Express 2011;
19:2401-2409. [PMID:
21369058 DOI:
10.1364/oe.19.002401]
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Abstract
We demonstrate an add/drop filter based on coupled vertical gratings on silicon. Tailoring of the channel bandwidth and wavelength is experimentally demonstrated. The concept is extended to implement a 1 by 4 wavelength division multiplexer with 6 nm channel separation, 3 nm bandwidth, a flat top response with < 0.8 dB ripple within the 3 dB passband, 1 dB insertion loss and 16 dB crosstalk suppression. The device is ultracompact, having a footprint < 2 X 10(-9)/2.
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