Abstract: A power converter includes a power converting circuit, an output current control circuit, a high-voltage control circuit, a low-voltage control circuit, and a driving circuit. The power converting circuit receives and converts a HV dc voltage from a HV side to a LV dc voltage to a LV side. The output current control circuit is configured to detect an output current and output a first control signal. The high-voltage control circuit is configured to detect the HV dc voltage and output a second control signal. The low-voltage control circuit is configured to detect the LV dc voltage and output a third control signal selectively according to the LV dc voltage, or the LV dc voltage and the first control signal, or the LV dc voltage and the second control signal. The driving voltage outputs a driving signal to drive the power converting circuit according to the third control signal.

Abstract: A power converter includes a power converting circuit, an output current control circuit, a high-voltage control circuit, a low-voltage control circuit, and a driving circuit. The power converting circuit receives and converts a HCMV dc voltage from a HCMV side to a LA dc voltage to a LA side. The output current control circuit is configured to detect an output current and output a first control signal. The high-voltage control circuit is configured to detect the HCMV dc voltage and output a second control signal. The low-voltage control circuit is configured to detect the LA dc voltage and output a third control signal selectively according to the LA dc voltage, or the LA dc voltage and the first control signal, or the LA dc voltage and the second control signal. The driving voltage outputs a driving signal to drive the power converting circuit according to the third control signal.

Abstract: A power converter includes a power converting circuit, a high-voltage control circuit, a low-voltage control circuit, and a driving circuit. The power converting circuit is configured to receive and convert a HVDC voltage from a high-voltage side to a LVDC voltage to a low-voltage side. The high-voltage control circuit is coupled to the high-voltage side and configured to detect the HVDC voltage and output a first control signal according to the HVDC voltage. The low-voltage control circuit is coupled to the low-voltage side and configured to detect the LVDC voltage and output a second control signal according to the LVDC voltage. The driving voltage is configured to selectively output a driving signal to drive the power converting circuit according to the first or the second control signal.

Abstract: A power converter includes a power converting circuit, a high-voltage control circuit, a low-voltage control circuit, and a driving circuit. The power converting circuit is configured to receive and convert a HVDC voltage from a high-voltage side to a LVDC voltage to a low-voltage side. The high-voltage control circuit is coupled to the high-voltage side and configured to detect the HVDC voltage and output a first control signal according to the HVDC voltage. The low-voltage control circuit is coupled to the low-voltage side and configured to detect the LVDC voltage and output a second control signal according to the LVDC voltage. The driving voltage is configured to selectively output a driving signal to drive the power converting circuit according to the first or the second control signal.

Abstract: A battery power integration apparatus includes a power converter, a battery control module, and a relay. The power converter has an input side and an output side, and the input side is connected to a high-voltage DC voltage. The battery control module includes a relay control circuit and a pre-charge control circuit. The relay is connected to the input side of the power converter and the battery control module. The pre-charge control circuit receives a pre-charge enable signal generated from the power converter to pre-charge the input side of the power converter. The power converter steps down the high-voltage DC voltage to output a low-voltage DC voltage at the output side thereof when the relay control circuit turns on the relay, thus supplying the required power for low-voltage devices inside a hybrid electric vehicle.

Abstract: An output power protection apparatus includes a DC conversion unit, an output protection unit, a high-voltage battery, a low-voltage battery, and a control unit. The DC conversion unit converts an input DC power into an output DC power. The output protection unit is connected in series to the DC conversion unit, and the output protection unit has a plurality of protection circuits connected in parallel to each other. When a short-circuit condition occurs between the high-voltage battery and the low-voltage battery or the low-voltage battery is reversely connected in polarity, the control unit generates a control signal to control the protection circuits to disconnect the connection between the low-voltage battery and a low-voltage device, and the DC conversion unit.

Abstract: A battery power integration apparatus includes a power converter, a battery control module, and a relay. The power converter has an input side and an output side, and the input side is connected to a high-voltage DC voltage. The battery control module includes a relay control circuit and a pre-charge control circuit. The relay is connected to the input side of the power converter and the battery control module. The pre-charge control circuit receives a pre-charge enable signal generated from the power converter to pre-charge the input side of the power converter. The power converter steps down the high-voltage DC voltage to output a low-voltage DC voltage at the output side thereof when the relay control circuit turns on the relay, thus supplying the required power for low-voltage devices inside a hybrid electric vehicle.

Abstract: An output power protection apparatus includes a DC conversion unit, an output protection unit, a high-voltage battery, a low-voltage battery, and a control unit. The DC conversion unit converts an input DC power into an output DC power. The output protection unit is connected in series to the DC conversion unit, and the output protection unit has a plurality of protection circuits connected in parallel to each other. When a short-circuit condition occurs between the high-voltage battery and the low-voltage battery or the low-voltage battery is reversely connected in polarity, the control unit generates a control signal to control the protection circuits to disconnect the connection between the low-voltage battery and a low-voltage device, and the DC conversion unit.

Abstract: This invention discloses a high spectral brightness laser generating device and a method thereof, which comprises a laser generator, a dispersion-increasing fiber. The laser generator generates a first laser pulse. The dispersion-increasing fiber is coupled to the laser generator. The first laser pulse becomes a second laser pulse by passing through the dispersion-increasing fiber. The bandwidth of the second laser pulse is narrower than that of the first laser pulse. The unit brightness of the second laser pulse is higher than that of the first laser pulse.

Abstract: A photonic millimeter-wave generator capable of combining wired and wireless communication facilities to further elongate the transmission distance comprises a laser generator for generating a first optical signal; an optical frequency comb generator coupled with the laser generator; and a pulse shaper coupled with the optical frequency comb generator. The optical frequency comb generator receives the first optical signal generated by the laser generator and outputs a second optical signal. The second optical signal contains multiple frequency components and is sent to the pulse shaper. The pulse shaper adjusts the amplitude and phase of the second optical signal and then outputs the signal as a third optical signal.

Abstract: This specification discloses a power polarization beam combiner and its applications in fiber communications. The power polarization beam combiner uses the photonic band gap formed in a photonic crystal to produce a left-hand material with a negative refractive index and high dispersion rate. Using such properties of the photonic crystal, several beams with different wavelengths and polarizations are combined and output to a common port.

Abstract: This specification discloses a power polarization beam combiner and its applications in fiber communications. The power polarization beam combiner uses the photonic band gap formed in a photonic crystal to produce a left-hand material with a negative refractive index and high dispersion rate. Using such properties of the photonic crystal, several beams with different wavelengths and polarizations are combined and output to a common port.

Abstract: A three-port optical polarization combiner is disclosed. It is used for combining two optical pump beams to increase optical pumping power in a DWDM optic fiber transmission system. The combiner will combine two beams with orthogonal polarizations into one and transmit it to another port for output. By non-reciprocal effect of a half-wave plate and a Faraday rotator, the reverse noise will be blocked to improve transmission quality and protect the laser lens.

Abstract: A three-port optical polarization beam combiner is disclosed. It is used for combining two optical pump beams to increase optical pumping power in a DWDM optic fiber transmission system. The combiner will combine two beams with orthogonal polarizations into one and transmit it to another port for output. By non-reciprocal effect of a half-wave plate and a Faraday rotator, the reverse noise will be blocked to improve transmission quality and protect the laser lens.

Abstract: This specification discloses a light signal interleaver, which can separate a light signal into two light signals with a large interval in between. A birefringent plate is used as a light signal interleaver to separate all wavelengths in a light signal into an O-ray and an E-ray. Therefore, the invention can increase the total transmission capacity under the existent network structure.

Abstract: This invention mainly provides a structure of high filtering precision optical signal interleaver. Herein the birefringent crystal is designed to lead the incident light having a suitable phase-delay and multi-pass to achieve a flattened filtering spectrum and to reduce the filtering spectrum error caused by unmatched component crystal length. Moreover, this invention will eliminate the element number and shorten the element length concurrently.

Abstract: This specification discloses a reflective optical circulator, which uses an optical reflective device to reflect an incident light beam from an optical port so that the reflected light beams further pass through all optical devices (i.e., all sorts of optical crystals) on the optical paths. With a proper reciprocal-non-reciprocal optical crystal combination, a particular linear polarization direction is generated to guide the reflected beams to the next optical port. The invention achieves the effect of repeatedly using crystals, lowering the number of crystals and the length of the optical circulator. On the other hand, all optical ports can be installed on the same side of the optical circulator, minimizing the device and making it easy to use.

Abstract: A multi-port optical isolator includes a plurality of optical input/output ports formed on one side of the isolator, a polarization splitter/combiner, a non-reciprocal polarization rotator module and a non-reciprocal reflector. Light beams entering the input ports can be guided to corresponding output ports while noise beams traveling in reverse direction can be blocked. By using reflective elements for managing the beam path, the length of the isolator can be greatly reduced, and multiple unitary isolators can be built in an isolator with a similar size to that of common single port isolators.

Abstract: This specification discloses a light signal interleaver, which can separate a light signal into two light signals with a large interval in between. A birefringent plate is used as a light signal interleaver to separate all wavelengths in a light signal into an O-ray and an E-ray. Therefore, the invention can increase the total transmission capacity under the existent network structure.

Abstract: The invention provides a compact optical circulator with three ports positioning between a dual-core collimator and a single-core collimator. The inventive circulator has a propagation director to couple a light from the dual-core collimator to one port of the circulator and another light form the other port of the circulator to the dual-core collimator. The invention further provides a compact optical circulator with three ports having a reflective compensator. The reflective compensator compensates the optical path length of two polarized beams. Furthermore, the invention eliminates the polarization mode dispersion by utilizing a reflective compensator. As well, the inventive circulator forgoes use of the reciprocal polarizing-rotating unit, thus reducing production costs.