Abstract: Techniques for termination for microring modulators are disclosed. In the illustrative embodiment, a microring modulator on a photonic integrated circuit (PIC) die is modulated by radiofrequency (RF) signals connected to electrodes across the microring modulator. A resistor is connected to each of the electrodes. The resistors both provide termination for the RF signals, preventing or reducing reflections, as well as forming part of a bias tee, allowing for a DC bias voltage to be applied across the electrodes.

Abstract: Embodiments herein relate to techniques for baseline wander (BLW) compensation. The technique may include identifying a data stream that is to be modulated by a ring modulator of an optical transmitter, wherein the data stream has a frequency operable to cause thermal-based BLW of an optical output of the optical transmitter. The technique may further include adjusting a time-varying direct current (DC) voltage bias of the ring modulator based on the frequency of the data stream. Other embodiments may be described and/or claimed.

Abstract: A system and method for an Avalanche photo-diode (“APD”) optical receiver and laser system to adjust its performance during system operation without disturbing network traffic. Very small changes may be adaptively applied to some key portions of the system by controlling a set of main system parameters including Q-factor; Bit Error Rate (BER); histograms of “1” and “0” levels; input optical power; and laser output power. This adaptive routine may be performed during operation of the system to keep the main system parameters close to their optimum value. During adjustment, the system may be divided into separate portions. The adjustment of each portion may be independent of the other portions of the system. For the optical network system, optimization and priority of different portions may be assigned based on network channel architecture.

Abstract: A method and system for optimizing a response time of a monitoring loop with forward error correction. Characteristics of a fiber optic communications channel are adjusted based on the number of errors corrected in the FEC decoder. An adaptive BER is calculated much faster by using a signal from an FEC decoder, than by comparing input and output transmission. Thereby, the lag time in adjusting the transmission characteristics of the fiber optic channel is minimized and the overall performance of the system is improved.

Abstract: A system and method for an Avalanche photo-diode (“APD”) optical receiver and laser system to adjust its performance during system operation without disturbing network traffic. Very small changes may be adaptively applied to some key portions of the system by controlling a set of main system parameters including Q-factor; Bit Error Rate (BER); histograms of “1” and “0” levels; input optical power; and laser output power. This adaptive routine may be performed during operation of the system to keep the main system parameters close to their optimum value. During adjustment, the system may be divided into separate portions. The adjustment of each portion may be independent of the other portions of the system. For the optical network system, optimization and priority of different portions may be assigned based on network channel architecture.

Abstract: A system and method for an Avalanche photo-diode (“APD”) optical receiver and laser system to adjust its performance during system operation without disturbing network traffic. Very small changes may be adaptively applied to some key portions of the system by controlling a set of main system parameters including Q-factor; Bit Error Rate (BER); histograms of “1” and “0” levels; input optical power; and laser output power. This adaptive routine may be performed during operation of the system to keep the main system parameters close to their optimum value. During adjustment, the system may be divided into separate portions. The adjustment of each portion may be independent of the other portions of the system. For the optical network system, optimization and priority of different portions may be assigned based on network channel architecture.

Abstract: A method and system for optimizing a response time of a monitoring loop with forward error correction. Characteristics of a fiber optic communications channel are adjusted based on the number of errors corrected in the FEC decoder. An adaptive BER is calculated much faster by using a signal from an FEC decoder, than by comparing input and output transmission. Thereby, the lag time in adjusting the transmission characteristics of the fiber optic channel is minimized and the overall performance of the system is improved.