| 1. |
- Parmigiani, Francesca, et al.
(author)
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All-Optical Phase Regeneration of 40Gbit/s DPSK Signals in a Black‐Box Phase Sensitive Amplifier
- 2010
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In: 2010 Conference on Optical Fiber Communication, Collocated National Fiber Optic Engineers Conference, OFC/NFOEC 2010; San Diego, CA; United States; 21 March 2010 through 25 March 2010. - 9781557528841 ; , s. PDPC3-
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Conference paper (peer-reviewed)abstract
- We present a black‐box four wave mixingbased bit‐rate‐flexible phase sensitive amplifier and use it in the first demonstration of 40 Gbit/s DPSK phaseregeneration.
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| 2. |
- Sygletos, S., et al.
(author)
-
Phase locking and carrier extraction schemes for phase sensitive amplification
- 2010
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In: 2010 12th International Conference on Transparent Optical Networks, ICTON 2010. - 9781424477975
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Conference paper (other academic/artistic)abstract
- We demonstrate two schemes which enable simultaneous phase locking, carrier extraction and frequency shifting for use in stand-alone phase sensitive amplifiers. The schemes provide phase locked pumps at appropriate frequency spacing for a number of non-degenerate PSA configurations. © 2010 IEEE.
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| 3. |
- 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..
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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.
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| 4. |
- Olsson, Samuel L I, 1984, et al.
(author)
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Injection locking-based pump recovery for phase-sensitive amplified links
- 2013
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In: Optics Express. - : The Optical Society. - 1094-4087 .- 1094-4087. ; 21:12, s. 14512-14529
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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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| 5. |
- Olsson, Samuel L I, 1984, et al.
(author)
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Optical Injection-Locking-Based Pump Recovery for Phase-Sensitively Amplified Links
- 2012
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In: Optics InfoBase Conference Papers. - Washington, D.C. : OSA. - 2162-2701. - 9781467302623 ; , s. Art. no. 6192145-
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Conference paper (peer-reviewed)abstract
- An injection-locking-based pump recovery system for phase-sensitively amplified links is proposed and studied experimentally. Measurements with 10 Gbaud DQPSK signals show penalty-free recovery of 0.8 GHz FWHM bandwidth pump with 63 dB overall amplification.
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| 6. |
- Slavík, Radan, et al.
(author)
-
All-optical phase and amplitude regenerator for next-generation telecommunications systems
- 2010
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In: Nature Photonics. - 1749-4885 .- 1749-4893. ; 4:10, s. 690-695
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Journal article (peer-reviewed)abstract
- Fibre-optic communications systems have traditionally carried data using binary (on-off) encoding of the light amplitude. However, next-generation systems will use both the amplitude and phase of the optical carrier to achieve higher spectral efficiencies and thus higher overall data capacities. Although this approach requires highly complex transmitters and receivers, the increased capacity and many further practical benefits that accrue from a full knowledge of the amplitude and phase of the optical field more than outweigh this additional hardware complexity and can greatly simplify optical network design. However, use of the complex optical field gives rise to a new dominant limitation to system performance—nonlinear phase noise. Developing a device to remove this noise is therefore of great technical importance. Here, we report the development of the first practical (‘black-box’) all-optical regenerator capableof removing both phase and amplitude noise from binary phase-encoded optical communications signals.
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