Output Optical Power Enhancement of Push-Pull Modulated DFB Laser With Asymmetric Structure

Push-pull control of motor output.

Inhibition usually decreases input-output excitability of neurons. If, however, inhibition is coupled to excitation in a push-pull fashion, where inhibition decreases as excitation increases, neuron excitability can be increased. Although the presence of push-pull organization has been demonstrated in single cells, its functional impact on neural processing depends on its effect on the system l...

Composite Cavity Fiber Laser with Asymmetric Output Intensity and Wavelength

The composite cavity fiber laser (CCFL) is relatively simple in its fabrication, as it is essentially three wavelength matched Bragg gratings in a section of doped fiber. By using internal feedback with unequal sub-cavity lengths, unidirectional CCFLs with significantly asymmetric output power from its two outputs can be achieved. Preliminary results also show that it is possible for the lasing...

An Ultralow-Power Fast-Transient Capacitor-Free Low-Dropout Regulator With Assistant Push-Pull Output Stage

A low-voltage low-dropout (LDO) regulator that converts an input of 1 V to an output of 0.85–0.5 V, with 90-nm CMOS technology is proposed. A simple symmetric operational transconductance amplifier is used as the error amplifier (EA), with a current splitting technique adopted to boost the gain. This also enhances the closed-loop bandwidth of the LDO regulator. In the rail-to-rail output stage ...

A novel optical labeling scheme using a FSK modulated DFB laser integrated with an EA modulator

Enhancement of Multioctave Dynamic Range in a Push-Pull Modulated Analog Photonic Link

These past few years, there have been numerous research efforts concentrated on the spurious free dynamic range (SFDR) enhancement of analog photonic links (APLs). These efforts are driven by various applications, such as military radars [1] and phased-array antennas for radio astronomy [3], that impose stringent SFDR requirements to the APLs. To date, most efforts to increase the SFDR have bee...