摘要:
A wireless capsule as a disease diagnosis tool in vivo can be introduced into a biological body by a native and/or artificial open, or endoscope, or an injection. The information obtained from a micro-spectrometer, and/or an imaging system, or a micro-biosensor, all of which are built-in a wireless capsule, can be transmitted to the outside of the biological body for medical diagnoses. In addition, a real-time specimen collection device is integrated with the diagnostic system for the in-depth in vitro analysis
摘要:
A wireless capsule as a disease diagnosis tool in vivo can be introduced into a biological body by a native and/or artificial open, or endoscope, or an injection. The information obtained from a micro-spectrometer, and/or an imaging system, or a micro-biosensor, all of which are built-in a wireless capsule, can be transmitted to the outside of the biological body for medical diagnoses. In addition, a real-time specimen collection device is integrated with the diagnostic system for the in-depth in vitro analysis
摘要:
A system includes a pulse reshaper for reshaping and re-amplifying optical signals in a communications network. In one embodiment, a vertical cavity semiconductor optical amplifier (VCSOA) device, comprising dual mode reflectors optically cooperating at each of an input signal wavelength (λs) and an offset wavelength (λc) proximate the input signal wavelength (λs) to provide thereby non-linear amplification of input signal (λs).
摘要:
A method and system includes a pulse reshaper for reshaping and re-amplifying optical signals in a communications network. In one embodiment, a semiconductor optical amplifier (SOA) device, including first and second reflective regions optically cooperating at each of an input signal wavelength (λs) and an offset wavelength (λs±n) proximate the input signal wavelength (λs) to provide thereby non-linear amplification of input signal (λs).
摘要:
A method and system includes a pulse reshaper for reshaping and re-amplifying optical signals in a communications network. In one embodiment, a vertical cavity semiconductor optical amplifier (VCSOA) device, comprising dual mode reflectors optically cooperating at each of an input signal wavelength (λs) and an offset wavelength (λC) proximate the input signal wavelength (λs) to provide thereby non-linear amplification of input signal (λs).
摘要:
An optical add/drop multiplexer (OADM) adapted to route optical signals having at least two different bit rates. The OADM has at least two sets of DWDM channels, e.g., with channels in a first set having a first bandwidth value suitable for the transmission of 10-Gb/s signals and channels in a second set having a second bandwidth value suitable for the transmission of 40-Gb/s signals. The first and second sets occupy two different spectral bands and the first set has two subsets of interleaved channels. In one embodiment, the OADM has first and second optical branches adapted to process optical signals corresponding to first and second groups of channels, respectively. The first group includes a first subset from the first set while the second group includes the second set and a second subset from the first set. Advantageously, OADMs of the invention may be used to create independent processing paths for different groups of channels. As a result, a communication system having those OADMs can be upgraded, e.g., to add a new 40-Gb/s service and/or to populate additional 10-Gb/s channels substantially without interrupting the 10-Gb/s service already in place.
摘要:
A pulse reshaper for reshaping and re-amplifying optical signals in a communications network by adjusting threshold and amplification characteristics of a semiconductor optical amplifier (SOA) having first and second reflective regions optically cooperating at each of an input signal wavelength (λs) and an offset wavelength (λC) proximate the input signal wavelength (λs). In one embodiment, a vertical cavity semiconductor optical amplifier (VCSOA) device, comprising dual mode reflectors optically cooperating at each of an input signal wavelength (λs) and an offset wavelength (λC) proximate the input signal wavelength (λs) to provide thereby non-linear amplification of input signal (λs).
摘要:
An optical add/drop multiplexer (OADM) adapted to route optical signals having at least two different bit rates. The OADM has at least two sets of DWDM channels, e.g., with channels in a first set having a first bandwidth value suitable for the transmission of 10-Gb/s signals and channels in a second set having a second bandwidth value suitable for the transmission of 40-Gb/s signals. The first and second sets occupy two different spectral bands and the first set has two subsets of interleaved channels. In one embodiment, the OADM has first and second optical branches adapted to process optical signals corresponding to first and second groups of channels, respectively. The first group includes a first subset from the first set while the second group includes the second set and a second subset from the first set. Advantageously, OADMs of the invention may be used to create independent processing paths for different groups of channels. As a result, a communication system having those OADMs can be upgraded, e.g., to add a new 40-Gb/s service and/or to populate additional 10-Gb/s channels substantially without interrupting the 10-Gb/s service already in place.
摘要:
A dispersion compensator apparatus including interleavers for de-interleaving/interleaving even and odd channels of a WDM signal, and dispersion compensation modules (DCMs) coupled between the interleavers. One or more of the DCMs is a periodic-group-delay (PGD) DCMs for providing dispersion compensation.
摘要:
An optical add/drop multiplexer (OADM) adapted to route optical signals having at least two different bit rates. The OADM has at least two sets of DWDM channels with channels in a first set having a first bandwidth value, e.g., suitable for the transmission of signals having a bit rate of 10 Gb/s, and channels in a second set having a second bandwidth value, e.g., suitable for the transmission of signals having a bit rate of 40 Gb/s. In one embodiment, the frequencies of the channels from the first set are interleaved with the frequencies of the channels from the second set, and the OADM has first and second optical branches adapted to process optical signals corresponding to the first and second sets, respectively. Initially, the OADM may be configured to process 10-Gb/s signals using the first optical branch only while leaving the second optical branch unutilized. During an upgrade, which adds a 40-Gb/s service to the system, the OADM may be configured to process 40-Gb/s signals using the second optical branch. Advantageously, the upgrade can be performed without or with minimum interruptions to the 10-Gb/s service already in place.