| 1. |
- Corcoran, William, 1983, et al.
(author)
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Mitigation of Nonlinear Impairments on QPSK Data in Phase-Sensitive Amplified Links
- 2013
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In: 39th European Conference on Optical Communication and Exhibition, ECOC 2013, London, 22-26 September 2013. - : Institution of Engineering and Technology. - 9781849197595 ; :622 CP, s. 486-488
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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.
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| 2. |
- Corcoran, William, 1983, et al.
(author)
-
Noise beating in hybrid phase-sensitive amplifier systems
- 2014
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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
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| 3. |
- 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.
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| 4. |
- Lundström, Carl Peter, 1982, et al.
(author)
-
Fiber optic parametric amplifier with 10-dB net gain without pump dithering
- 2013
-
In: IEEE Photonics Technology Letters. - 1041-1135 .- 1941-0174. ; 25:3, s. 234-237
-
Journal article (peer-reviewed)abstract
- We present a stimulated Brillouin Scattering (SBS)-suppressed fiber optic parametric amplifier/wavelength converter constructed from four highly nonlinear fiber pieces with applied strain gradients and separated by isolators. The effective total SBS threshold increase is about 11 dB, and a net parametric gain of 10 dB is obtained without any pump dithering.
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| 5. |
- Lundström, Carl Peter, 1982, et al.
(author)
-
Fiber-optic parametric amplifiers without pump dithering
- 2013
-
In: Optics InfoBase Conference Papers. - Washington, D.C. : OSA. - 2162-2701.
-
Conference paper (peer-reviewed)abstract
- We present passively stimulated Brillouin scattering-suppressed highly nonlinear fiber cascades, and use them to implement fiber-optic parametric amplifiers capable of up to 10 dB net parametric gain without pump dithering.
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| 6. |
- Lundström, Carl Peter, 1982, et al.
(author)
-
Phase and amplitude characteristics of a phase-sensitive amplifier operating in gain saturation
- 2012
-
In: Optics Express. - 1094-4087 .- 1094-4087. ; 20:19, s. 21400-21412
-
Journal article (peer-reviewed)abstract
- We investigate a non-degenerate phase-sensitive amplifier (PSA) operating in gain saturation experimentally and numerically using the three-wave model. The phase-dependent gain and phase-to-phase transfer functions are obtained for different levels of saturation with good agreement between experimental and numerical data when higher-order FWM is small. Moreover, we identify an operating point where the PSA is found to be able to significantly reduce both phase-and amplitude noise simultaneously.
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| 7. |
- Lundström, Carl Peter, 1982, et al.
(author)
-
Phase and Amplitude Transfer Functions of a Saturated Phase-Sensitive Parametric Amplifier
- 2011
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In: Proc. European Conference on Optical Communications (ECOC), Geneva, Switzerland. - Washington, D.C. : OSA. - 2162-2701. - 9781557529312 ; , s. Th.11.LeCervin.4-
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Conference paper (peer-reviewed)abstract
- We experimentally investigate the phase and amplitude transfer functions of a nondegenerate idler PSA in saturation. A regime in which phase noise can be reduced with very low amplitude penalty is identified.
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| 8. |
- Lundström, Carl Peter, 1982, et al.
(author)
-
Phase-Sensitive Amplifiers for Optical Links
- 2013
-
In: Optical Fiber Communications Conference (OFC). - 9781479904570 ; , s. OW3C.5-
-
Conference paper (peer-reviewed)abstract
- A review of recent progress on the implementation of phase-sensitive amplifiers in optical links is provided. Additionally, their use as regenerators, specifically the trade-off between phase- and amplitude regeneration is discussed.
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| 9. |
- Lundström, Carl Peter, 1982, et al.
(author)
-
Short-Pulse Amplification in a Phase-Sensitive Amplifier
- 2012
-
In: Optics InfoBase Conference Papers. - Washington, D.C. : OSA. - 2162-2701. - 9781557529381
-
Conference paper (peer-reviewed)abstract
- We experimentally demonstrate amplification of picosecond pulses in a PSA, discuss the tolerance on residual delay and dispersion on the signal and idler, and also show the first demonstration of pulse compression in a PSA.
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| 10. |
- Olsson, Samuel L I, 1984, et al.
(author)
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Injection locking-based pump recovery for phase-sensitive amplified links
- 2013
-
In: Optics Express. - : The Optical Society. - 1094-4087 .- 1094-4087. ; 21:12, s. 14512-14529
-
Journal article (peer-reviewed)abstract
- An injection locking-based pump recovery system for phase-sensitive amplified links, capable of handling 40 dB effective span loss, is demonstrated. Measurements with 10 GBd DQPSK signals show penalty-free recovery of a pump wave, phase modulated with two sinusoidal RF-tones at 0.1 GHz and 0.3 GHz, with 64 dB amplification. The operating power limit for the pump recovery system is experimentally investigated and is governed by the noise transfer and phase modulation transfer characteristics of the injection-locked laser. The corresponding link penalties are explained and quantified. This system enables, for the first time, WDM compatible phase-sensitive amplified links over significant lengths.
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