Integrated remotely tunable optical delay line for millimeter-wave beam steering fabricated in an InP generic foundry

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Abstract

A compact and fabrication-tolerant integrated remotely tunable optical delay line is proposed for millimeter-wave beam steering and is fabricated in an InP generic foundry. The proposed delay line is based on a spectrally cyclic-arrayed waveguide grating feedback loop. Its major features include the tolerant architecture with reduced chip size, and bi-directional operation with simplified remote tuning. Moreover, its cyclic feature guarantees further cascaded operations either for 2D radio beam steering or for high-resolution delay generation. The experimental results show less than 6.5-dB insertion loss of the integrated delay line. Five different delays from 0 to 71.6 ps are generated with less than 0.67-ps delay errors.
Original languageEnglish
Pages (from-to)3930-3933
Number of pages4
JournalOptics Letters
Volume40
Issue number17
DOIs
Publication statusPublished - 2015

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