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 published on a yearly basis
Papers
More filters
17 Mar 2002
TL;DR: In this paper, the authors focus on optical all-pass filters and provide a flexible phase response that can approximate any desired dispersion over a bandwidth which is large relative to the filter period and, in the limit of low feedback path losses, decoupled from the magnitude response.
Abstract: As the bitrate per channel increases in optical systems, the allowable tolerance for dispersive effects, such as chromatic and polarization mode dispersion, decreases substantially At 40 Gb/s and beyond, the tolerance window has shrunk to an extent where adjustable dispersion compensation is required to accommodate beginning-of-life distributions, wavelength dependence, measurement uncertainties, and temperature fluctuations in the fiber dispersion We focus on optical allpass filters Allpass filters are unique in their ability to provide a flexible phase response that can approximate any desired dispersion over a bandwidth which is large relative to the filter period and, in the limit of low feedback path losses, which is decoupled from the magnitude response
28 citations
TL;DR: A triangular lattice dispersion compensating photonic crystal fiber that produces high birefringence and operates at fundamental mode only is presented, which makes this fiber very suitable in the area of broadband dispersion compensation and polarization-maintaining applications.
Abstract: A triangular lattice dispersion compensating photonic crystal fiber is presented in this paper. The fiber produces high birefringence and operates at fundamental mode only. The full vector finite element method with a perfectly matched absorbing layer boundary condition is applied to investigate the guiding properties of the proposed fiber. The designed fiber demonstrates that it is possible to obtain a very large negative dispersion of −9486.1 ps/(nm·km) at 1550 nm wavelength with a negative dispersion more than −7000 ps/(nm·km) over the entire C-band (1530–1565 nm), which is suitable for broadband dispersion compensation. The birefringence is about 4.13×10−2 at 1550 nm wavelength, which is also very high. All these properties make this fiber very suitable in the area of broadband dispersion compensation and polarization-maintaining applications.
28 citations
TL;DR: In this article, a generalized Poincare/spl acute/sphere method is proposed to measure the complex principal states of polarization vector for a system with polarization-dependent loss or gain.
Abstract: A new generalized Poincare/spl acute/ sphere method is proposed to measure the complex principal states of polarization vector for a system with polarization-dependent loss or gain. The spectral resolved measurements with our proposed test set agree with the well-known Jones eigenvalue analysis method.
28 citations
TL;DR: The first-order polarization-mode dispersion (PMD) tolerance of two polarization-multiplexed RZ-DQPSK signals at overall 40 Gb/s is experimentally investigated, finding that 40-Gb/s POLMUX Rz-D QPSK is more sensitive to PMD than single-polarization 20-Gb/, while it is more PMD-tolerant than 40-gb/s NRZ-OOK.
Abstract: We experimentally investigate the first-order polarization-mode dispersion (PMD) tolerance of two polarization-multiplexed (POLMUX) RZ-DQPSK signals at overall 40 Gb/s. The polarization demultiplexing is enabled by an automatic endless polarization stabilizer. Time-interleaving the two orthogonally polarized RZ-DQPSK signals minimizes the crosstalk due to the non-ideal polarization stabilization, while it represents the worst-case for the PMD-induced crosstalk. Bit-error rate measurements are performed both in back-to-back and after 25-km standard single-mode fiber. The PMD tolerance is evaluated as a function of the instantaneous differential group delay, introduced by a first-order PMD emulator. 40-Gb/s POLMUX RZ-DQPSK is more sensitive to PMD than single-polarization 20-Gb/s DQPSK, while it is more PMD-tolerant than 40-Gb/s NRZ-OOK. Besides, its chromatic dispersion robustness is similar to the single-polarization 20-Gb/s DQPSK. The combination of POLMUX and DQPSK is therefore very promising in view of transmission systems at high bit-rate.
27 citations
Patent•
26 Mar 1999
TL;DR: In this article, a dispersion compensation device uses at least two chromatic dispersion compensators with different dispersion properties to compensate for the additional orders of dispersion by using additional compensation fibers with unique dispersion characteristics, which can be coupled directly to a transmission fiber.
Abstract: A dispersion compensation device uses at least two chromatic dispersion compensation fibers to compensate for chromatic dispersion present in an optical communication system. Two dispersion orders can be corrected using appropriate lengths of two serially coupled compensation fibers having different dispersion characteristics. The device can compensate for N additional orders of dispersion by using N additional compensation fibers with unique dispersion characteristics. The device can be coupled directly to a transmission fiber.
27 citations