| 1. |
- Andrekson, Peter, 1960, et al.
(author)
-
Phase-Sensitive Fiber-Optic Parametric Amplifiers and their Applications (Invited paper)
- 2010
-
In: Proc. European Conference on Optical Communications (ECOC). - 9781424485352 ; 1-2, s. We.6.E.1-
-
Conference paper (peer-reviewed)abstract
- We review some fundamental and practical aspects of fiber-optic parametric amplifiers (FOPAs). In particular, their unique phase-sensitive amplification ability along with the corresponding ultralow noise figure will be discussed. Applications of both phase-insensitive and phase-sensitive FOPAs will also be covered.
|
|
| 2. |
- Corcoran, William, 1983, et al.
(author)
-
Mitigation of Nonlinear Impairments on QPSK Data in Phase-Sensitive Amplified Links
- 2013
-
In: 39th European Conference on Optical Communication and Exhibition, ECOC 2013, London, 22-26 September 2013. - : Institution of Engineering and Technology. - 9781849197595 ; 2013:622 CP, s. 486-488
-
Conference paper (peer-reviewed)abstract
- We investigate the mitigation of nonlinear impairments via phase-sensitive amplification. We show in simulation and experiment that this effect can be optimized through engineering link dispersion. A phase-sensitive amplified link is measured to reduce nonlinear penalties by over 3dB compared to a phase-insensitive amplified link.
|
|
| 3. |
- Corcoran, William, 1983, et al.
(author)
-
Noise beating in hybrid phase-sensitive amplifier systems
- 2014
-
In: Optics Express. - : The Optical Society. - 1094-4087 .- 1094-4087. ; 22:5, s. 5762-5771
-
Journal article (peer-reviewed)abstract
- We investigate the effect of noise loading in a hybrid phase-sensitive amplifier system, analyzing the effect of noise beating between the signal and idler waves coupled in a parametric amplifier. Through analyzing input and output optical signal to noise ratios, we find that system performance of a phase-sensitive amplifier is 3 to 6 dB improved over a phase-insensitive amplifier, depending on the ratio of loaded noise power to that of vacuum fluctuations. (C) 2014 Optical Society of America
|
|
| 4. |
- Corcoran, William, 1983, et al.
(author)
-
Phase-Sensitive Optical Pre-Amplifier Implemented in an 80km DQPSK Link
- 2012
-
In: Optics InfoBase Conference Papers. - Washington, D.C. : OSA. - 2162-2701.
-
Conference paper (peer-reviewed)abstract
- We present the first demonstration of a phase-sensitive fiber optic parametric amplifier successfully implemented over an 80 km dispersion managed link. We measure 1.3 dB higher sensitivity with this amplifier system against a comparable conventional EDFA-based link.
|
|
| 5. |
- Ellis, A. D., et al.
(author)
-
Future Directions to Realize Ultra-High Bit-Rate Transmission Systems
- 2010
-
In: Proceedings of OptoElectronics and Communications Conference, OECC 2010, Sapporo, Japan, 5-9 July 2010, invited paper..
-
Conference paper (other academic/artistic)abstract
- In this paper we examine two potential future directions for the realization of ultra-high bit rate transmission systems.
|
|
| 6. |
- Gruner-Nielsen, Lars, et al.
(author)
-
Brillouin Suppressed Highly Nonlinear Fibers
- 2012
-
In: European Conference and Exhibition on Optical Communication, ECEOC 2012; Amsterdam; Netherlands; 16 September 2012 through 20 September 2012. - 9781557529503 ; , s. We.1.F.1-
-
Conference paper (peer-reviewed)abstract
- Methods for suppression of stimulated Brillouin scattering in highly nonlinear fibers are reviewed. Emphasis is paid to SBS suppression by aluminum doping of the core. New results for a HNLF with an aluminum doped core and reduced loss are presented.
|
|
| 7. |
- Gruner-Nielsen, Lars, et al.
(author)
-
Silica-based highly nonlinear fibers with a high SBS threshold
- 2011
-
In: 2011 IEEE Winter Topicals, WTM 2011. - 9781424484287 ; , s. 171-172
-
Conference paper (other academic/artistic)abstract
- Results on the suppression of stimulated Brillouin scattering in highly non linear fibers with both germanium- and aluminum-doped cores based on spooling the fiber with a linear strain gradient are compared and presented.
|
|
| 8. |
- Kakande, Joseph, et al.
(author)
-
Detailed characterization of a
fiber-optic parametric amplifier in phase-sensitive and phase-insensitive operation
- 2010
-
In: Optics Express. - 1094-4087 .- 1094-4087. ; 18:5, s. 4130-4137
-
Journal article (peer-reviewed)abstract
- We experimentally demonstrate a single-pumped, non-degenerate phase-sensitive parametric amplifier with a precise control of phase and amplitude of the in-going waves and investigate in detail its gain, attenuation and saturation properties in comparison with operation in phase insensitive amplifier (PIA) mode. We experimentally observe the variation of the gain and attenuation as a function of the relative phase, pump power and the signal-idler power ratio. The phase sensitive gain spectrum is studied over a 24 nm symmetrical bandwidth and we achieve a maximum phase sensitive amplification (PSA) gain of 33 dB. A departure from the theoretical maximum attenuation as the gain increases is observed and explained.
|
|
| 9. |
- Lorences Riesgo, Abel, 1987, et al.
(author)
-
Demonstration of Degenerate Vector Phase-Sensitive Amplification
- 2013
-
In: Optical Communication (ECOC 2013), 39th European Conference and Exhibition on. - : Institution of Engineering and Technology. - 9781849197595 ; 2013:622 CP, s. 492-494
-
Conference paper (peer-reviewed)abstract
- The performance of a degenerate vector (dual cross-polarized pump) phase-sensitive amplifier (PSA) is characterized and compared to a degenerate scalar (dual co-polarized pump) PSA. In both schemes, we assess the gain as a function of the signal state of polarization, verifying its compliance with theory, and the phase transfer function.
|
|
| 10. |
- Lorences Riesgo, Abel, 1987, et al.
(author)
-
Experimental analysis of degenerate vector phase-sensitive amplification
- 2014
-
In: Optics Express. - 1094-4087 .- 1094-4087. ; 22:18, s. 21889-21902
-
Journal article (peer-reviewed)abstract
- We comprehensively investigate a degenerate vector phase-sensitive amplifier (PSA). We determine the gain dependence on the relative phase and polarization angle between the pumps and the degenerate signal wave. The vector PSA is experimentally shown to be sensitive to the pump states of polarization (SOP) due to polarization mode dispersion in the fiber. However, the scheme performance agrees well with theory under specific pump SOPs and we achieve an on-off gain over 10 dB with a small deviation from the theoretically expected results. In comparison to the scalar scheme, the proposed vector scheme has larger tolerance for pump depletion due to four-wave mixing between pumps and generation of higher-order idlers.
|
|
