ACACIA COMMUNICATIONS, INC.

A system including an optical transceiver, including a first portion of a laser cavity operable to output optical energy; and an optical modulator operable to modulate the optical energy output by the laser; and a temperature-controlled optical gain subassembly optically coupled to the optical transceiver, the optical gain subassembly including a plurality of semiconductor optical amplifiers (SOAs), wherein one SOA of the plurality of SOAs is operable to amplify the optical energy inside a laser cavity.

A method, apparatus, and system for adjusting the phase noise of a laser.

An apparatus and method for calculating the frequency of the light.

In part, the disclosure relates to a constellation shaping system that includes a plurality of encoders, wherein one or more of the plurality of encoders is associated with a priority level according to a configuration, wherein a pulse is allocated to a time slot, using an encoder based on priority level of the encoder.

In one aspect, the disclosure relates to an apparatus including a photonic integrated circuit (PIC) including an optical network including V optical output channels and U optical input ports, wherein a selectable subset of the U optical input ports can be connected to L lasers, wherein L is less than or equal to U, and wherein the PIC is operable to output light on some or all of the V optical output channels in response to different number of active lasers connected to the U optical input ports.

In an embodiment, an apparatus and system comprising a first inductor with a first diameter; and a switched inductor including a metal layer and a switch; wherein when the switch is closed the switch connects the metal layer of the switched inductor to form an inductor with a parallel circuit enabling current to flow through the switched conductor; and wherein when the switch is open, current is not enabled to flow through the switched conductor. In another embodiment, a method for tuning a high-Q inductor, the method comprising closing a switch of a switched inductor, wherein the switch connects the switched inductor to a first inductor; wherein closing the switch enables current to flow though the switched inductor as well as the first inductor to change the inductance of the high Q inductor.

Systems and methods are disclosed for a multiphase clock generation. An example method includes facilitating, by a phase interpolator (PI) circuit comprising a plurality of PIs, transfer of information across one or both of a transmit (TX) lane or a receive (RX) lane, wherein the transfer of information is based on a clock timing. The PI circuit receives, from a clock-and-data recovery (CDR) circuit, a plurality of input clock phases. The CDR circuit comprises a centrally located phase-locked loop (PLL) circuit and a plurality of multiphase generators. In some embodiments, each multiphase generator of the plurality of multiphase generators is adjacent to a respective PI of the plurality of PIs. Based on the plurality of input clock phases, the PI circuit adjusts, the clock timing for the transfer of information.

An apparatus, method, and system for converting a charge to a voltage.

A method for scanning a scene is disclosed. According to the method, light is transmitted by a transmitter through a transmitter surface grating array, as a first elliptical pattern in a first lateral direction. Light is received by a receiver through a receiver surface grating array, from an area of a second elliptical pattern. The received light is reflected from the first elliptical pattern. The first elliptical pattern is orthogonal to the second elliptical pattern. The first elliptical pattern overlaps with the second elliptical pattern.

A method, apparatus, and computer program product for estimated transmit skew comprising restoring an I component and a Q component of a signal, extracting clock information from the I component, extracting clock information from the Q component, and determining the skew between the I component and the Q component using the extracted clock information from the I component and the extracted clock information from the Q component.