Abstract:
The invention relates to a communication module comprising several parallel transmitting diodes (1) and at least one monitor transmitting diode (6, 8) arranged on a common substrate, in addition to at least one driver device (2) for generating a prestream and a modulation stream for the transmitting diodes (1) and the monitor transmitting diode (6, 8). Said module also includes at least one monitor device consisting of a monitor transmitting diode (6, 8), a receiving device (7) and a control device (5). A modulated optical signal generated by a monitor transmitting diode (6, 8) is detected by a receiver device (7), converted and transmitted as a monitor signal to the control device (5). Depending on the transmitted signal, the control device generates a first control signal for the driver device (2) with the purpose of regulating the modulation flow of the transmitting diodes (1) and the monitor transmitting diode (6, 8). According to the invention, the modulation amplitude of the modulation stream for the monitor transmitting diodes (6, 8) is lower than the modulation amplitude of the modulation stream for the transmitting diodes (1). The disturbing influence of the monitor signal on the data signal of the transmitting diodes is thereby minimized.
Abstract:
The useful beam component of the radiation emitted vertically by an optical transmitter passes via a lens body to the coupling zone of an optical coupling partner. A component of the emitted radiation strikes a reception zone of a monitor unit. The reflected component likewise traverses the lens body, and is reflected toward the reception zone at the boundary surface thereof on the coupling zone side.
Abstract:
A communication module includes several parallel transmitting diodes and at least one monitor transmitting diode arranged on a common substrate. The module also includes at least one monitor device consisting of a monitor transmitting diode, a receiving device and a control device. A modulated optical signal generated by a monitor transmitting diode is detected by a receiver device, and is converted and transmitted as a monitor signal to the control device. Depending on the transmitted signal, the control device generates a first control signal for the driver device with the purpose of regulating the modulation flow of the transmitting diodes and the monitor transmitting diode. The modulation amplitude for the modulation stream for the monitor transmitting diodes is lower than the modulation amplitude of the modulation stream for the transmitting diodes. The disturbing influence of the monitor signal on the data signal of the transmitting diodes is thereby minimized.
Abstract:
The light guide has two sections (2,3). A first surface (7) is inclined with respect to the sections. The second waveguide surface is covered with a selective wavelength filter. Selected digital word wavelengths input into the light guide reflect on the front surface of the second section (10) which is inclined with respect to the axis.
Abstract:
To ensure laser safety, also in the case of a largest possible coupled optical power, during the direct optical coupling of a light-emitted component to an optical waveguide, an optical system includes coupling the light through a fiber end configured as a multimode step index optical waveguide having a numeric aperture larger than the half-width value of the angular distribution of the radiation emitted from the radiation source. To distribute the radiation fed into the actual optical waveguide over the largest possible angular range with regard to the luminous power, the coupling of the light beam into the fiber end is effected such that the coupled light beams are inclined in relation to the geometric axis of the optical core of the fiber end at a defined angle.
Abstract:
To ensure laser safety, also in the case of a largest possible coupled optical power, during the direct optical coupling of a light-emitted component to an optical waveguide, an optical system includes coupling the light through a fiber end configured as a multimode step index optical waveguide having a numeric aperture larger than the half-width value of the angular distribution of the radiation emitted from the radiation source. To distribute the radiation fed into the actual optical waveguide over the largest possible angular range with regard to the luminous power, the coupling of the light beam into the fiber end is effected such that the coupled light beams are inclined in relation to the geometric axis of the optical core of the fiber end at a defined angle.
Abstract:
The aim of the invention is to ensure so-called laser safety, also in the case of the largest possible coupled optical power, during the direct optical coupling of a light-emitting component (1) to an optical waveguide (20). To this end, the light is coupled via a fiber end (10) which is configured as a multimode step index optical waveguide and whose numeric aperture is larger than the half-width value of the angular distribution of the radiation (2) emitted from the radiation source. In order to distribute the radiation (2'), which is fed into the actual optical waveguide, over the largest possible angular range with regard to the luminous power, the coupling of the light beam into the fiber end is effected in such a manner that the coupled light beams (2') are inclined in relation to the geometric axis of the optical core (11) of the fiber end (10) with a defined angle (f).
Abstract:
The invention relates to a communication module comprising several parallel transmitting diodes (1) and at least one monitor transmitting diode (6, 8) arranged on a common substrate, in addition to at least one driver device (2) for generating a prestream and a modulation stream for the transmitting diodes (1) and the monitor transmitting diode (6, 8). Said module also includes at least one monitor device consisting of a monitor transmitting diode (6, 8), a receiving device (7) and a control device (5). A modulated optical signal generated by a monitor transmitting diode (6, 8) is detected by a receiver device (7), converted and transmitted as a monitor signal to the control device (5). Depending on the transmitted signal, the control device generates a first control signal for the driver device (2) with the purpose of regulating the modulation flow of the transmitting diodes (1) and the monitor transmitting diode (6, 8). According to the invention, the modulation amplitude of the modulation stream for the monitor transmitting diodes (6, 8) is lower than the modulation amplitude of the modulation stream for the transmitting diodes (1). The disturbing influence of the monitor signal on the data signal of the transmitting diodes is thereby minimized.