Abstract: A GT etalon-based compensator is disclosed that may be utilized in combination with a wavelength-division multiplexer at a transmitter location to provide a degree of pre-compensation for signals operating at those wavelengths known to experience chromatic dispersion between transmitter and receiver locations. The GT etalon-based compensator utilizes individual dispersion compensators that are configured as transmissive devices by using a polarization beam splitter, GT etalon, and a pair of quarter-wave plates in a manner that maintains the output signal path colinear with the input signal path, and also maintains the linear polarization state of the propagating signal. Multiple ones of these transmissive dispersion compensators may be cascaded in a back-to-back arrangement within the signal path of a particular channel to provide a larger measure of pre-compensation for wavelengths that are known to be more susceptible to chromatic compensation.

Abstract: In one example, an optoelectronic module may include a stack assembly including an electrical integrated circuit and an optical integrated circuit electrically and mechanically coupled to one another, an interposer electrically and mechanically coupled to the stack assembly, and an optical connector to optically couple the optical integrated circuit with an array of optical fibers.

Abstract: An optical receiver includes an error generator, a multipath interference estimator, and a combiner. The error generator is configured to receive an input comprising a received optical signal, to estimate a modulation level of samples of the received optical signal, and to generate an error signal based on the estimated modulation level of the samples, the error signal representing a difference between an actual level of the received optical signal and the estimated modulation level. The multipath interference estimator is configured to generate estimates of multipath interference (MPI) associated with the samples of the received optical signal based on the error signal. The combiner is configured to generate an MPI-mitigated signal based on a combination of the samples and the estimates of MPI.

Abstract: A 3D co-packaged optics (CPO) stack device may include a thermal management and control layer, a printed circuit board (PCB) layer, a processing layer, a transimpedance amplifier and driver (TIA/Driver) electrical integrated circuit (EIC) layer, and a photonic integrated circuit (PIC) layer. The thermal management and control layer is positioned on a first surface of the PCB layer, a first surface of the processing layer is positioned on a second surface of the PCB layer, a first surface of the TIA/Driver EIC layer is positioned on a second surface of the processing layer, and a first surface of the PIC layer is positioned on a second surface of the TIA/Driver EIC layer.

Abstract: An optical receiver includes an error generator, a multipath interference estimator, and a combiner. The error generator is configured to receive an input comprising a received optical signal, to estimate a modulation level of samples of the received optical signal, and to generate an error signal based on the estimated modulation level of the samples, the error signal representing a difference between an actual level of the received optical signal and the estimated modulation level. The multipath interference estimator is configured to generate estimates of multipath interference (MPI) associated with the samples of the received optical signal based on the error signal. The combiner is configured to generate an MPI-mitigated signal based on a combination of the samples and the estimates of MPI.

Abstract: An optical receiver includes an error generator, a multipath interference estimator, and a combiner. The error generator is configured to receive an input comprising a received optical signal, to estimate a modulation level of samples of the received optical signal, and to generate an error signal based on the estimated modulation level of the samples, the error signal representing a difference between an actual level of the received optical signal and the estimated modulation level. The multipath interference estimator is configured to generate estimates of multipath interference (MPI) associated with the samples of the received optical signal based on the error signal. The combiner is configured to generate an MPI-mitigated signal based on a combination of the samples and the estimates of MPI.

Abstract: In one example, an optoelectronic module may include a stack assembly including an electrical integrated circuit and an optical integrated circuit electrically and mechanically coupled to one another, an interposer electrically and mechanically coupled to the stack assembly, and an optical connector to optically couple the optical integrated circuit with an array of optical fibers.

Abstract: In one example, an optoelectronic module may include a stack assembly including an electrical integrated circuit and an optical integrated circuit electrically and mechanically coupled to one another, an interposer electrically and mechanically coupled to the stack assembly, and an optical connector to optically couple the optical integrated circuit with an array of optical fibers.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: In one example, an optoelectronic module may include a stack assembly including an electrical integrated circuit and an optical integrated circuit electrically and mechanically coupled to one another, an interposer electrically and mechanically coupled to the stack assembly, and an optical connector to optically couple the optical integrated circuit with an array of optical fibers.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.

Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.