Related Experiment Video
Updated: Jun 22, 2026

07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
All optical labeling scheme with vestigial sideband payload
Optics Express
|June 5, 2009
Summary
A new method uses 40Gb/s vestigial sideband modulation for optical payload and label multiplexing in all-optical label switching (AOLS) networks. This approach minimizes power penalties and reduces bandwidth, paving the way for future optical internet applications.
Area of Science:
- Optoelectronics
- Optical Communications
- Network Engineering
Background:
- All-optical label switching (AOLS) networks are crucial for high-speed data transmission.
- Efficient multiplexing and separation of optical payload and labels are key challenges in AOLS.
Purpose of the Study:
- To propose and experimentally demonstrate a novel scheme for optical payload and label multiplexing and separation in AOLS networks.
- To evaluate the performance of the proposed scheme, focusing on power penalties and bandwidth reduction.
Main Methods:
- Utilizing 40Gb/s vestigial sideband modulation for optical signal processing.
- Employing optical filters for the combined multiplexing and separation of payload and wavelength labels.
- Conducting experimental demonstrations to validate the proposed scheme.
Main Results:
- Successful experimental demonstration of the proposed scheme for payload and label multiplexing and separation.
- Minimal power penalties observed for both payload and label after separation.
- Demonstrated that payload power penalty remains below 1dB with a wavelength difference greater than 0.1nm.
Conclusions:
- The proposed scheme effectively reduces channel bandwidth for payload and labels in AOLS networks.
- The technique shows significant potential for implementation in future optical internet infrastructure.
- The method offers a viable solution for efficient optical signal processing in advanced optical networks.
Related Concept Videos
IR Frequency Region: X–H Stretching
In IR spectroscopy, signals produced by the X−H bonds (such as C−H, O−H, or N−H) can be observed in the frequency range of 2700–4000 cm–1. The C−H stretching vibration forms sharp bands in the region 2850–3000 cm–1. The presence of the O−H stretching vibration leads to the forming of an absorption band in the frequency range 3650–3200 cm−1. At the same time, N−H stretching can be confirmed by absorption bands in the 3500–3100 cm−1 range. Even though both O−H and N−H bonds vibrate at a similar...
Labeling DNA Probes
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
IR Absorption Frequency: Hybridization
Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that stretch at a...
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that stretch at a...
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single stretching vibration...
IR Spectrum
When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0% (complete...
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0% (complete...
Receiver Operating Characteristic Plot
A ROC (Receiver Operating Characteristic) plot is a graphical tool used to assess the performance of a binary classification model by illustrating the trade-off between sensitivity (true positive rate) and specificity (false positive rate). By plotting sensitivity against 1 - specificity across various threshold settings, the ROC curve shows how well the model distinguishes between classes, with a curve closer to the top-left corner indicating a more accurate model. The area under the ROC curve...
