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Shot-noise limited optical hybrid based on fused fiber couplers.

Publication ,  Journal Article
Hagan, K; Zhou, KC; Dhalla, A-H; Izatt, JA
Published in: Optics letters
January 2024

We describe a fiber-based coherent receiver topology which utilizes intrinsic phase shifts from fiber couplers to enable instantaneous quadrature projection with shot-noise limited signal-to-noise ratio (SNR). Fused 3 × 3 fiber couplers generate three phase-shifted signals simultaneously that can be combined with quadrature projection methods to detect magnitude and phase unambiguously. We present a novel, to the best of our knowledge, differential detection topology which utilizes a combination of 3 × 3 and 2 × 2 couplers to enable quadrature projection with fully differential detection. We present a mathematical analysis of this 3 × 3 differential detection topology, extended methods for signal calibration, and SNR analysis. We characterize the SNR advantage of this approach and demonstrate a sample application illustrating simultaneous magnitude and phase imaging of a chrome-on-glass test chart.

Duke Scholars

Published In

Optics letters

DOI

EISSN

1539-4794

ISSN

0146-9592

Publication Date

January 2024

Volume

49

Issue

2

Start / End Page

347 / 350

Related Subject Headings

  • Optics
  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
  • 0906 Electrical and Electronic Engineering
  • 0206 Quantum Physics
  • 0205 Optical Physics
 

Citation

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Hagan, K., Zhou, K. C., Dhalla, A.-H., & Izatt, J. A. (2024). Shot-noise limited optical hybrid based on fused fiber couplers. Optics Letters, 49(2), 347–350. https://doi.org/10.1364/ol.501105
Hagan, Kristen, Kevin C. Zhou, Al-Hafeez Dhalla, and Joseph A. Izatt. “Shot-noise limited optical hybrid based on fused fiber couplers.Optics Letters 49, no. 2 (January 2024): 347–50. https://doi.org/10.1364/ol.501105.
Hagan K, Zhou KC, Dhalla A-H, Izatt JA. Shot-noise limited optical hybrid based on fused fiber couplers. Optics letters. 2024 Jan;49(2):347–50.
Hagan, Kristen, et al. “Shot-noise limited optical hybrid based on fused fiber couplers.Optics Letters, vol. 49, no. 2, Jan. 2024, pp. 347–50. Epmc, doi:10.1364/ol.501105.
Hagan K, Zhou KC, Dhalla A-H, Izatt JA. Shot-noise limited optical hybrid based on fused fiber couplers. Optics letters. 2024 Jan;49(2):347–350.
Journal cover image

Published In

Optics letters

DOI

EISSN

1539-4794

ISSN

0146-9592

Publication Date

January 2024

Volume

49

Issue

2

Start / End Page

347 / 350

Related Subject Headings

  • Optics
  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
  • 0906 Electrical and Electronic Engineering
  • 0206 Quantum Physics
  • 0205 Optical Physics