scispace - formally typeset
Search or ask a question
Topic

Polarization mode dispersion

About: Polarization mode dispersion is a research topic. Over the lifetime, 5147 publications have been published within this topic receiving 80055 citations. The topic is also known as: PMD.


Papers
More filters
Journal ArticleDOI
TL;DR: A new Kalman filter structure is proposed, which can jointly compensate ultra-fast RSOP, large PMD and RCD, and compared with CMA/MMA, the proposed Kalman scheme can provide a significant performance enhancement.
Abstract: Polarization demultiplexing is generally carried out by a multiple-input multiple-output (MIMO) based algorithm in polarization division multiplexing (PDM) coherent systems. However, in some extreme environments, the MIMO algorithm becomes inapplicable due to the ultra-fast rotation of the state of polarization (RSOP) and large polarization mode dispersion (PMD). In addition, the residual chromatic dispersion (RCD) is always present because of the mismatch of the compensated chromatic dispersion and real value induced in the optical fiber channel. According to the literature, the Kalman filter-based polarization demultiplexing algorithms possess very weak RCD tolerance. Faced with this dilemma, in this paper, a new Kalman filter structure is proposed, which can jointly compensate ultra-fast RSOP, large PMD and RCD. This Kalman filter structure enables the equalization of the RSOP in the time domain and compensation for RCD and PMD in the frequency domain. We verified the performance of the proposed Kalman scheme in the 28 Gbaud PDM-QPSK/16 QAM coherent system, with a comparison to constant modulus algorithm/multiple modulus algorithm (CMA/MMA). The simulation results confirm that, compared with CMA/MMA, the proposed Kalman scheme can provide a significant performance enhancement to cope with ultra-fast RSOP (up to 3 Mrad/s) and large PMD (more than 200 ps) with a large tolerance to RCD (over the range of ± 820 ps/nm in PDM-QPSK and ± 500 ps/nm in PDM-16 QAM).

22 citations

Journal ArticleDOI
TL;DR: The design, fabrication, photonic packaging and the characterization of a silicon polarization independent optical tunable filter circuit with fiber assembly is reported, which demonstrates the polarization transparent filter characteristics with an insertion loss of ~13.4 dB and an extinction ratio of ~20 dB.
Abstract: We report the design, fabrication, photonic packaging and the characterization of a silicon polarization independent optical tunable filter circuit with fiber assembly. We demonstrate the polarization transparent filter characteristics with an insertion loss of ~13.4 dB, an extinction ratio of ~20 dB, and a 3dB bandwidth of 0.2 nm. The tuning range is of ~11.72 nm, along with the tuning speed of less than 400 μs. The tuning efficiency is ~0.23 nm/mW. The use of polarization diversity scheme and the silicon photonic packaging bridges the gap between the silicon photonic circuits and the real applications.

22 citations

Patent
Shoji Niki1, Eiji Kimura1
06 Oct 1995
TL;DR: In this paper, a polarization state changing apparatus which can change the polarization state of an incident polarized light entering to an optical fiber to any direction and can output is provided, in which three polarization plane maintaining optical fibers are connected at the polarization plane changing parts 30 and 30'so that the optical axes X and Y of the adjacent optical fiber are mutually rotated at an angle of 45 degrees in terms of the fiber axis.
Abstract: A polarization state changing apparatus which can change the polarization state of an incident polarized light entering to an optical fiber to any direction and can output is provided. This polarization state changing apparatus, in an embodiment, comprises three polarization plane maintaining optical fibers 10, 20 and 300 which are serially connected at two polarization plane changing parts 30 and 30'. Those three polarization plane maintaining optical fibers are connected at the polarization plane changing parts 30 and 30'so that the optical axes X and Y of the adjacent optical fibers are mutually rotated at an angle of 45 degrees in terms of the fiber axis. Stress application parts for applying stress to each of the polarization plane maintaining optical fibers are provided. In a specific example, each optical fiber is wound around each piezoelectric element cylinder and predetermined stress is applied to each optical fiber by driving those piezoelectric element cylinders by power supplies each of which oscillating frequency and generated voltage are both variable. Also, a polarization degree measuring apparatus using the polarization state changing apparatus is provided to measure degree of polarization accurately and quickly.

22 citations

Proceedings ArticleDOI
07 Mar 2000
TL;DR: In this paper, a lightwave-micromachine-based polarization-controller was demonstrated and experimentally verified using a light-wave-radio frequency (LWR) system and demonstrated to be useful in manipulating polarization states in lightwave systems.
Abstract: We demonstrate a lightwave-micromachine-based polarization-controller and experimentally verify its operation. The results suggest that micromachines may be useful in manipulating polarization states in lightwave systems and may thus lead to smaller and cheaper polarization-mode dispersion-compensators.

22 citations

Proceedings ArticleDOI
03 Oct 2005
TL;DR: A tool implementing a global Q factor that takes into account the interaction between the four physical layer impairments and from which the bit error rate (BER) is derived is proposed, enabling to study the suitability of optical transparency in transport networks.
Abstract: In the absence of all-optical 3R regenerators, the quality of transmission has a strong impact of the feasibility of all-optical long-haul transmission. Four main physical layer impairments degrade the quality of an optical analog signal, namely chromatic dispersion (CD), polarization mode dispersion (PMD), optical signal to noise ratio (OSNR), and nonlinear phase shift (PhiNL). In most previous studies, a Q factor evaluates the quality of transmission in considering the aforementioned parameters individually (Qi with i isin {1,2,3,4}). In this paper, we propose a tool implementing a global Q factor that takes into account the interaction between the four impairments and from which we derive the bit error rate (BER). This new factor referenced as Q8 enables to study the suitability of optical transparency in transport networks. By means of numerical applications, we compare two backbone networks: the North-American NSF network (NSFNET) and the Pan-European backbone (EBN)

22 citations


Network Information
Related Topics (5)
Optical fiber
167K papers, 1.8M citations
91% related
Semiconductor laser theory
38.5K papers, 713.7K citations
91% related
Photonics
37.9K papers, 797.9K citations
89% related
Photonic crystal
43.4K papers, 887K citations
87% related
Transmission (telecommunications)
171.3K papers, 1.2M citations
82% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202332
202275
202145
202069
201968
201868