| 1. |
- Westbergh, Petter, 1981, et al.
(författare)
-
32 Gb/s transmission experiments using high speed 850 nm VCSELs
- 2009
-
Ingår i: Conference on Lasers and Electro-Optics (CLEO). - 2162-2701. - 9781557528698 ; , s. 1-2
-
Konferensbidrag (refereegranskat)abstract
- We demonstrate error free transmission at bit rates up to 32 Gb/s at room temperature and 25 Gb/s at 85degC using a 9 mum oxide aperture 850 nm VCSEL. The VCSEL design is optimized for high speed operation by minimizing parasitics, reducing self-heating, and using strained InGaAs quantum wells to improve differential gain.
|
|
| 2. |
- Ahmad, Tauseef, 1986, et al.
(författare)
-
Methodology for Power-Aware Coherent Receiver Design
- 2013
-
Ingår i: Optics InfoBase Conference Papers. - 2162-2701. ; , s. SPT4D.4-
-
Konferensbidrag (refereegranskat)abstract
- We describe a methodology to design and evaluate DSP hardware for a coherent receiver. Important parameters that can be assessed include DSP power consumption and chip area.
|
|
| 3. |
- Alfredsson, Arni, 1989, et al.
(författare)
-
Phase-Noise Compensation for Spatial-Division Multiplexed Transmission
- 2017
-
Ingår i: Optics InfoBase Conference Papers. - 2162-2701.
-
Konferensbidrag (refereegranskat)abstract
- The problem of correlated phase noise in spatial-division multiplexed transmission is studied. To compensate for the phase noise, an algorithm for joint-core phase-noise estimation and symbol detection is proposed, which outperforms conventional methods.
|
|
| 4. |
- Alvarado, A., et al.
(författare)
-
Achievable rates for four-dimensional coded modulation with a bit-wise receiver
- 2014
-
Ingår i: Optics InfoBase Conference Papers. - Washington, D.C. : OSA. - 2162-2701.
-
Konferensbidrag (refereegranskat)abstract
- We study achievable rates for four-dimensional (4D) constellations for spectrally efficient optical systems based on a (suboptimal) bit-wise receiver. We show that PM-QPSK outperforms the best 4D constellation designed for uncoded transmission by approximately 1 dB. Numerical results using LDPC codes validate the analysis.
|
|
| 5. |
- Andersson-Engels, Stefan, et al.
(författare)
-
Deep-tissue optical imaging and photoactivation activities at biophotonics@tyndall
- 2016
-
Ingår i: Frontiers in Optics, FiO 2016. - 2162-2701. - 9781943580194
-
Konferensbidrag (refereegranskat)abstract
- Activities for deep tissue imaging and photoactivation will be presented. Wihin Biophotonics@Tyndall projects based on upconverting nanoparticles and ultrasound optical tomography will be pursued. Data from collaborative research will be given.
|
|
| 6. |
- Andrekson, Peter, 1960
(författare)
-
All-optical waveform sampling
- 2009
-
Ingår i: Optics InfoBase Conference Papers. - 2162-2701. - 9781424440801
-
Konferensbidrag (refereegranskat)
|
|
| 7. |
- Andrekson, Peter, 1960
(författare)
-
Amplification technologies for capacity and reach enhancements
- 2014
-
Ingår i: Optics InfoBase Conference Papers. - 2162-2701. ; , s. Art. no. 6886674-
-
Konferensbidrag (refereegranskat)abstract
- A review of optical amplifier technologies will be given with the purpose to illustrate possible ways forward to delay the “capacity crunch”. This includes Raman and parametric amplifiers as well as multi-core/few-mode amplifiers.
|
|
| 8. |
- Andrekson, Peter, 1960
(författare)
-
Applications of phase-sensitive parametric amplification
- 2012
-
Ingår i: Optics InfoBase Conference Papers. - Washington, D.C. : OSA. - 2162-2701.
-
Konferensbidrag (refereegranskat)abstract
- A review of recent progress in nonlinear fiber-based phase-sensitive parametric amplifiers is provided. In addition, their potential use as in-line amplifiers, resulting in significant link performance improvement potential, is discussed.
|
|
| 9. |
- Andrekson, Peter, 1960
(författare)
-
Metrology of complex optical modulation formats
- 2011
-
Ingår i: 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2011. - 2162-2701. - 9781457702136
-
Konferensbidrag (refereegranskat)abstract
- New modulation formats require sophisticated characterization equipment. Coherent optical signal analyzers are useful as they allow quantification of the hardware performance without the need for DSP and can serve as benchmark. Self-homodyne approach can serve as a benchmark for IF recovery algorithm evaluation. There is a need for both equivalent-time (high bandwidth) sampling and real-time burst sampling. Ideally, one would like real-time, high bandwidth sampling in a single instrument. Most of the transmitter impairments are found in the transitions, not at the center of the symbol/bit slot. When different transmitter and receiver impairments occur simultaneously, it is challenging to identify origin. There is still a lack of common testing standard for multi-level formats. Standardized repetitive sequences for noise averaging would simplify analysis and compliance testing.
|
|
| 10. |
- Andrekson, Peter, 1960
(författare)
-
Phase sensitive fiber optic parametric amplifiers
- 2011
-
Ingår i: 37th European Conference on Optical Communication and Exhibition, ECOC 2011, Geneva, 18 September 2011 through 22 September 2011. - 2162-2701. - 9781557529312
-
Konferensbidrag (refereegranskat)abstract
- A review of recent progress in nonlinear fiber-based phase-sensitive parametric amplifiers is provided. In addition, their use as in-line amplifiers, resulting in significant link performance improvement potential, is discussed.
|
|
