摘要:
A latching system for use in selectively securing a module within a receptacle of a host device is described. In one or more examples, the latching system includes a powered actuation mechanism and a latching mechanism. In one or more examples, the module latching mechanism includes a latch and the powered actuation mechanism disengages a latch from a catch. In one or more examples, two latches are provided. In one or more examples, the latching mechanism of a module includes a pusher that interacts with a latch located on a receptacle. In one or more examples, a module includes two latches.
摘要:
An optical transmitter is disclosed wherein a signal processor receives a data stream and outputs a drive signal for a laser, where the drive signal encodes each bit of the data stream according to the values of adjacent bits effective to compensate for spreading of bits within the fiber. The output of the laser is input to an optical spectrum reshaper that outputs a signal having an enhanced extinction ratio.
摘要:
In one example embodiment, an optoelectronic communications assembly having an optical receiver or an optical transmitter includes an optical interface disposed at an end thereof and through which optical signals are communicated by the optical receiver or optical transmitter. The optoelectronic communications assembly also includes an electronic component and a first electrical interface disposed at the optical interface end of the optical communications assembly and communicatively coupled to the electronic component.
摘要:
A latching system for use in selectively securing a module within a receptacle of a host device is described. In one or more examples, the latching system includes a powered actuation mechanism and a latching mechanism. In one or more examples, the module latching mechanism includes a latch and the powered actuation mechanism disengages a latch from a catch. In one or more examples, two latches are provided. In one or more examples, the latching mechanism of a module includes a pusher that interacts with a latch located on a receptacle. In one or more examples, a module includes two latches.
摘要:
An optical transmitter is disclosed wherein a signal processor receives a data stream and outputs a drive signal for a laser, where the drive signal encodes each bit of the data stream according to the values of adjacent bits effective to compensate for spreading of bits within the fiber. The output of the laser is input to an optical spectrum reshaper that outputs a signal having an enhanced extinction ratio.
摘要:
Provided herein is a novel approach to simultaneous fiber presence detection and improved laser eye safety of an optical transceiver. The subject optical transceiver is fitted with at least one switch in its receptacle that controls the laser diode and indicates the presence of a fiber (or fibers) within such a receptacle. If a fiber is present within the subject module receptacle, the laser switch is permitted to be “on”, whereas the absence of a fiber will prevent the laser switch from turning on, thereby permitting effective control of the laser at a single point of failure within the entire optical transceiver system. The typical optical transceivers of today exhibit limited optical power output due to eye safety limit criteria. With this novel approach, however, a module's output power can be increased to higher level since the only way a person's eye may be exposed to the laser is the removal of the fiber receptacle from the subject module and once the fiber is absent from the module, the laser turns off and/or put optical transceiver into standby mode automatically to save power.
摘要:
In one example embodiment, an optoelectronic communications assembly having an optical receiver or an optical transmitter includes an optical interface disposed at an end thereof and through which optical signals are communicated by the optical receiver or optical transmitter. The optoelectronic communications assembly also includes an electronic component and a first electrical interface disposed at the optical interface end of the optical communications assembly and communicatively coupled to the electronic component.
摘要:
Output optical power of an optical transmitter is regulated to compensate for fluctuations in output optical power and for tracking error. Dual loop automatic power control includes an optical sensor feedback loop for sensing optical energy proximate a back facet of the optical transmitter and a thermal sensor feedback loop for sensing thermal energy at point proximate the optical transmitter. Fluctuations in sensed thermal energy are indicative of the tracking error of the optical transmitter. Signals indicative of the sensed optical and thermal energy are combined and utilized to regulate the output optical power to be approximately constant over a predetermined range of temperatures.
摘要:
A relatively small, pluggable optical transceiver utilizes a set of at least three separate printed wiring boards (PWBs), coupled together with a pair of flexible wiring boards, allows for the “middle” (base) PWB to be disposed in a horizontal plane, with the PWBs on either side (i.e., a transmitter PWB and a receiver PWB) to be disposed parallel to the base PWB, by virtue of using the flexible PWBs. Advantageously, the optoelectronic transmitter and receiver modules are directly connected (hardwired) to their respective, vertical PWBs, to form a rugged arrangement. Crosstalk between the vertical boards is reduced by using a shielding plate between the boards. Undesired fiber movement is reduced (as compared to the prior art) by separating the optical path from the electrical path, which also provides mechanical relief for the transmitter and receiver PWBs.