Analog signal transmission in a high-contrast-gratings-based hollow-core-waveguide

H. Huang*, Y. Yue, L. Zhang, C. Chase, D. Parekh, F. Sedgwick, M. C. Wu, C. J. Chang-Hasnain, M. Tur, A. E. Willner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In this paper, the performance of an on-chip hollow-core-waveguide (HW) using high-contrast gratings (HCG) for analog signal transmission is analyzed numerically. Simulation results indicate that after propagating 100 m in a HCG-HW with optimally designed parameters, there is very little degradation of either third-order intermodulation distortion spur-free dynamic range (IM3 SFDR) or third-order harmonic distortion (THD) SFDR. Due to the chromatic dispersion of the HCG-HW, the highest second-order harmonic distortion (SHD) SFDR is limited to 107.3 dB .Hz1/2. In addition, > 100 dB .Hz 2/3 IM3 SFDR can be achieved over a radio frequency (RF) range of 80 GHz and an optical wavelength bandwidth of 50 nm after propagation 100 m through a HCG-HW. The parameter dependence of the waveguide performance is also investigated. With a ±20 nm variation on all parameters, the propagation length in an HCG-HW is limited to ∼ 6 m in order to maintain an IM3 SFDR of >100 dB .Hz 2/3.

Original languageEnglish
Article number6335438
Pages (from-to)3640-3646
Number of pages7
JournalJournal of Lightwave Technology
Issue number23
StatePublished - 2012


  • Dynamic range
  • harmonic distortion
  • integrated optical waveguides
  • intermodulation distortion
  • microwave photonics


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