Display options
Cite
Agarwal A, Dailey JM, McKinstrie CJ, et al. Enhancement of out-of-band rejection in optical filters based on phase-sensitive amplification. Opt Lett. 2016;41(12):2847-50doi: 10.1364/OL.41.002847.
Agarwal, A., Dailey, J. M., McKinstrie, C. J., & Toliver, P. (2016). Enhancement of out-of-band rejection in optical filters based on phase-sensitive amplification. Optics letters, 41(12), 2847-50. https://doi.org/10.1364/OL.41.002847
Agarwal, Anjali, et al. "Enhancement of out-of-band rejection in optical filters based on phase-sensitive amplification." Optics letters vol. 41,12 (2016): 2847-50. doi: https://doi.org/10.1364/OL.41.002847
Agarwal A, Dailey JM, McKinstrie CJ, Toliver P. Enhancement of out-of-band rejection in optical filters based on phase-sensitive amplification. Opt Lett. 2016 Jun 15;41(12):2847-50. doi: 10.1364/OL.41.002847. PMID: 27304304.
Copy Download .nbib Format: NLM
Share it on

Opt Lett. 2016 Jun 15;41(12):2847-50. doi: 10.1364/OL.41.002847.

Enhancement of out-of-band rejection in optical filters based on phase-sensitive amplification.

Optics letters

Anjali Agarwal, James M Dailey, Colin J McKinstrie, Paul Toliver

PMID: 27304304 DOI: 10.1364/OL.41.002847

Abstract

We present a novel optical filter based on amplification and deamplification in a phase-sensitive amplifier (PSA), whose out-of-band rejection is enhanced by slightly imbalancing the inputs to the PSA. The out-of-band rejection of the PSA-based filter with balanced input signal and idler powers is given by G2 in the optical domain, where G is the maximum phase-sensitive gain. By unbalancing the input to the PSA, the optical out-of-band rejection is significantly enhanced beyond G2, thus enabling filters with high rejection even with moderate-gain PSAs. We demonstrate a filter with optical and electrical extinctions of 29 dB and 60 dB, respectively, using a moderate PSA gain of only 10 dB. Further, this technique allows for ultrawideband frequency tuning, spanning multiterahertz bandwidths along with filter response reconfigurability. These novel concepts will be invaluable for optical signal processing in high-performance analog and digital systems.

Publication Types