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W-band coherent wireless link using injection-locked laser diodes

 
: Hisatake, S.; Carpintero, G.; Yoshimizu, Y.; Minamikata, Y.; Oogimoto, K.; Yasuda, Y.; Dijk, F. van; Tekin, T.; Nagatsuma, T.

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IEEE Photonics Technology Letters 27 (2015), No.14, pp.1565-1568
ISSN: 1041-1135
English
Journal Article
Fraunhofer IZM ()

Abstract
We demonstrate that the simultaneous injection locking of two monolithically integrated distributed feedback (DFB) laser diodes (LDs) with an optical frequency comb is a feasible technique for photonic-based carrier signal generation in the real-time coherent wireless link. The phase of the carrier signal generated by heterodyning the two injection-locked DFB LDs is sufficiently stable to achieve 10-Gb/s error-free (bit-error rate <10-11) coherent wireless transmission in the W-band (75-110 GHz) without active phase stabilization on the transmitter side and digital signal processing on the receiver side. Compared with a direct detection scheme, we show a 17-dB sensitivity improvement using coherent detection. These results open the path toward the development of compact and cost-effective coherent photonic wireless transmitters based on state-of-the-art InP photonic integrated circuit technology, which have wider bandwidth compared with electronics-based transmitters.

: http://publica.fraunhofer.de/documents/N-352052.html