Abstract: Some embodiments include a latch mechanism and an optoelectronic module that includes the latch mechanism. The latch mechanism may include a driver, a follower, a pivot member, and a cam member. The driver may be configured to rotate relative to a housing of the optoelectronic module about an axis of rotation. The follower may be configured to be slidably positioned relative the housing. The follower may include a resilient member configured to interface with the housing and may define an opening including a protuberance. The pivot member may be coupled to the driver or to the housing and may define the axis of rotation. The cam member may be coupled to the driver and may be configured to engage the follower from within the opening so as to urge the follower to slide relative to the housing as the driver is rotated between a latched position and an unlatched position.

Abstract: Embodiments described herein include a multichannel transmitter optical subassembly that includes a plurality of lasers and a signal combiner. The plurality of lasers may be configured to emit light each with a different one of a plurality of light signals, each of the plurality of light signals having a wavelength within one of a plurality of wavelength bands. The signal combiner may be disposed relative to the plurality of lasers to receive the plurality of light signals. The signal combiner may include at least one surface having an optical coating that reflects at least one of the light signals of the plurality of light signals and transmits at least one of the light signals of the plurality of light signals.

Abstract: An example embodiment includes an idle state detection circuit. The idle state detection circuit includes a bias current loop, a rectifying circuit loop, a voltage translating loop, and a filter circuit. The bias current loop provides a rectifying diode a forward current such that the rectifying diode detects an alternating current (AC) signal received from a transmitter via one or more transmission nodes. The rectifying circuit loop stores differential peak to peak amplitude information representative of a peak to peak amplitude of the AC signal in a first capacitor that is electrically coupled to a cathode side of the rectifying diode. The voltage translating loop converts the differential peak to peak amplitude information stored at the first capacitor to a single-end voltage signal across a first resistor that is electrically coupled to the cathode side of the rectifying diode. The filter circuit filters an AC component of the single-end voltage signal.

Abstract: A circuit may include amplifier circuitry configured to receive a current signal at an amplifier input node, convert the current signal to a voltage signal, and output the voltage signal at an amplifier output node. The circuit may also include overload circuitry configured to receive a replica DC input voltage and a replica DC output voltage. The overload circuitry may be further configured to detect that the current signal exceeds a threshold level based on the replica DC input voltage and the replica DC output voltage. In addition, the overload circuitry may be configured to, in response to and based on detecting that the current signal exceeds the threshold level, direct DC current of the current signal through a DC shunt path and direct AC current of the current signal through an AC shunt path. The AC shunt path may be different from the DC shunt path.

Abstract: A guide pin wafer may include a base wafer that includes multiple dies. Each die may include a corresponding lens cutout. The guide pin wafer may also include multiple guide pins mounted on the base wafer. Each die of the base wafer may be mounted with two or more corresponding guide pins that may be configured to engage a parallel fiber connector to the corresponding die.

Abstract: A decision-directed phase detector (DDPD) to compare an input signal including clock and data components with a reference signal set to a clock crossover value, and generate a first compared output signal designating a transition of the input signal through the clock crossover value. The DDPD may also receive the first compared output signal and generate a phase adjustment signal, and compare the input signal with the reference signal set to a positive offset clock crossover value of the clock crossover value offset by a positive offset value, and generate a positive offset compared output signal designating a transition of the input signal through the positive offset clock crossover value. The DDPD may further generate a valid transition signal to route the phase adjustment signal to a clock generation circuit when the positive offset compared output signal transitions over a clock period.

Abstract: An example embodiment includes a fiber optic integrated circuit (IC). The fiber optic IC includes an integrated power supply. The integrated power supply includes a filter, an active switch, and a pulse width modulator (“PWM”). The filter is configured to convert a signal to an output signal of the integrated power supply. The active switch is configured to control introduction of the signal to the filter. The PWM is configured to generate a PWM output signal that triggers the active switch.

Abstract: According to an aspect of an embodiment, a method may include receiving a digital data signal at an optical receiver. The method may further include measuring an eye quality of the received digital data signal. In addition, the method may include adjusting a decision threshold of the optical receiver based on the measured eye quality.

Abstract: Disclosed embodiments relate to an interconnect structure for coupling at least one electronic unit for outputting and/or receiving electric signals, and at least one optical unit for converting said electric signals into optical signals and/or vice versa, to a further electronic component. The interconnect structure comprises an electrically insulating substrate and a plurality of signal lead pairs to be coupled between said electronic unit and a front end contact region for electrically contacting said interconnect structure by said further electronic component.

Abstract: A method and apparatus for characterizing and compensating optical impairments in an optical transmitter includes operating an optical transmitter comprising a first and second parent MZ, each comprising a plurality of child MZ modulators that are biased at respective initial operating points. An electro-optic RF transfer function is generated for each of the plurality of child MZ modulators. Curve fitting parameters are determined for each of the plurality of electro-optic RF transfer functions and operating points of each child MZ modulator are determined using the curve fitting parameters. An IQ power imbalance is determined using the curve fitting parameters. Initial RF drive power levels are determined that compensate for the determined IQ power imbalance. The XY power imbalance is determined for initial RF drive power levels using the curve fitting parameters.

Abstract: An electromagnetic interference (EMI) shield may include a first shield section configured to be positioned on a first portion of an optical subassembly and a second shield section configured to be positioned on a second portion of the optical subassembly. The first shield section may be configured to contact the second shield section such that the first shield section and the second shield section are held in place when the first shield section and the second shield section are positioned, respectively, on the first portion and the second portion of the optical subassembly.

Abstract: An optical transmitter may include a transmit laser assembly configured to emit multiple light beams. The optical transmitter may additionally include an isolator configured to rotate a corresponding polarization state of each of the multiple light beams. The optical transmitter may additionally include a power multiplexing combiner configured to receive the multiple light beams from the isolator and combine the multiple light beams into a combined light beam. The optical transmitter may additionally include a lens configured to focus the combined light beam onto an optical fiber for transmission.

Abstract: A method to measure and report electromagnetic radiation power includes receiving electromagnetic radiation and generating an electrical signal in response to the received electromagnetic radiation. The electrical signal may have a magnitude based on the power of the electromagnetic radiation. The method also includes applying a logarithmic gain to the electrical signal to generate a logarithmically amplified electrical signal. The method also includes sampling the logarithmically amplified electrical signal to generate a digital sample of the logarithmically amplified electrical signal.

Abstract: In one example embodiment, an optoelectronic assembly includes a multilayer ceramic substrate that includes multiple ceramic layers and a via disposed through at least one of the ceramic layers. The via may be formed from a conductive material that is configured to communicate a signal through the via. The multilayer ceramic substrate may be configured to dissipate heat emitted by an electronic component coupled to the multilayer ceramic substrate.

Abstract: A transceiver can include a transmitter and a receiver. The transmitter can include: a primary laser emitter; a primary monitor photodiode optically coupled with the laser emitter; a spare laser emitter; and a transmitter integrated circuit having a primary channel operably coupled with the primary laser emitter; a spare channel operably coupled with the spare laser emitter; a switch on the primary channel; and a secondary channel operably coupled with the switch and the spare channel. The receiver can include: a primary detector photodiode; a spare detector photodiode; and a receiver integrated circuit a primary receiver channel operably coupled with the at least one primary detector photodiode; a spare receiver channel operably coupled with the spare detector photodiode; a receiver switch on the spare receiver channel; and a secondary receiver channel operably coupled with the receiver switch and the primary receiver channel.

Abstract: A method of soldering can include: providing a first electronic component having a first buttoned soldering pad including a first soldering pad and one or more first button heads protruding from a first surface of the soldering pad; providing a second electronic component having a soldering pad; and soldering the first buttoned soldering pad to the soldering pad. The method includes introducing solder to spaces around the one or more first buttons of the first buttoned soldering pad. The method includes introducing a first solder to spaces around the one or more first buttons of the first buttoned soldering pad; introducing a second solder to spaces around one or more second buttons of a second buttoned soldering pad of the first electronic component; and forming spaces between the first and second solder that electronically insulate the first solder from the second solder.

Abstract: An optical circulator integrated into a transceiver for bi-directional communication may include a core configured to pass a transmission signal in a transmit direction and a received signal in a receive direction. The optical circulator may include an input port optically coupled to the core. The input port may be configured to deliver the transmission signal to the core. The optical circulator may include an output port optically coupled to the core. The output port may be configured to receive the received signal from the core. The optical circulator may additionally include a network port optically coupled to the core. The network port may be configured to receive the transmission signal from the core and deliver the transmission signal to a fiber optic cable. The network port may be configured to receive the received signal from the fiber optic cable and deliver the received signal to the core.

Abstract: A wavelength locker for use with tunable optical devices may include an etalon, a polarization beam splitter, and a first and second detector. The etalon may be positioned to receive a first beam and may include a first birefringent crystal having a first optical axis and a second birefringent crystal having a second optical axis. The first birefringent crystal may be coupled to the second birefringent crystal such that the first optical axis and the second optical axis are orthogonal to one another.

Abstract: An example embodiment includes an optoelectronic module. The optoelectronic module may be configured to transmit out-of-band (OOB) data as an average optical power difference between optical signals. The optoelectronic module may include a first optical source, a second optical source, and an optical power control device. The first optical source may be configured to generate a first optical signal including first channel payload data on a first optical channel. The second optical source may be configured to generate a second optical signal including second channel payload data on a second optical channel. The optical power control device may be configured to vary average optical powers of one or more of the first optical signal and the second optical signal to create an average optical power difference between the first optical signal and the second optical signal that is representative of a logical bit of the OOB data.

Abstract: This disclosure generally relates to high-speed fiber optic networks that use light signals to transmit data over a network. The disclosed subject matter includes devices and methods relating to ferrule assemblies and/or ferrule alignment assemblies. In some aspects, the disclosed devices and methods may relate to a ferrule assembly including: optical fibers, an upper clamp member and a lower clamp member configured to retain the optical fibers that are positioned between the upper and lower clamp members, and a ferrule body surrounding at least a portion of the upper and lower clamp members; and an alignment sleeve including a sleeve cavity configured to receive the ferrule body such that the ferrule assembly is capable of being longitudinally repositioned with respect to the alignment sleeve.