Abstract: An optical transceiver configured to operate in a host device includes an electrical interface communicatively coupled to the host device to interface electrically with the host device, wherein the optical transceiver is compliant with a Multi-Source Agreement (MSA) which is supported by the host device; optical transceiver components communicatively coupled to the electrical interface, wherein the optical transceiver components are configured to optically interface signals with a second optical transceiver to form an optical link; and electronic dispersion compensation circuitry communicatively coupled to the optical transceiver components and configured to electronically compensate for optical fiber chromatic and/or polarization mode dispersion associated with the optical link, separate and independent from the host device.

Abstract: An apparatus adapted to operate a pluggable optical transceiver in a plurality of modulation schemes includes core circuitry adapted to interface with a host device, wherein the host device is adapted to support the pluggable optical transceiver; direct detection modulation circuitry communicatively coupled to the core circuitry; coherent modulation circuitry communicatively coupled to the core circuitry; and selection circuitry adapted to operate one of the direct detection modulation circuitry and the coherent modulation circuitry based on a selection depending on an application of the pluggable optical transceiver.

Abstract: An optical transceiver configured to operate in a host device includes an electrical interface communicatively coupled to the host device to interface electrically with the host device, wherein the optical transceiver is compliant with a Multi-Source Agreement (MSA) which is supported by the host device; optical transceiver components communicatively coupled to the electrical interface, wherein the optical transceiver components are configured to optically interface signals with a second optical transceiver to form an optical link; and electronic dispersion compensation circuitry communicatively coupled to the optical transceiver components and configured to electronically compensate for optical fiber chromatic and/or polarization mode dispersion associated with the optical link, separate and independent from the host device.

Abstract: Integrated performance monitoring (PM); optical layer operations, administration, maintenance, and provisioning (OAM&P); alarming; amplification, and the like is described in optical transceivers, such as multi-source agreement (MSA)-defined modules. A pluggable optical transceiver defined by an MSA agreement can include advanced integrated functions for carrier-grade operation which preserves the existing MSA specifications allowing the pluggable optical transceiver to operate with any compliant MSA host device with advanced features and functionality, such as Forward Error Correction (FEC), framing, and OAM&P directly on the pluggable optical transceiver. The advanced integrated can be implemented by the pluggable optical transceiver separate and independent from the host device.

Abstract: A pluggable optical transceiver interface module adapted to operate in a host device includes a housing compliant to a first Multi Source Agreement (MSA), wherein the housing is adapted to plug into the host device; a slot in the housing adapted to receive a pluggable optical transceiver, wherein the pluggable optical transceiver includes an optical transmitter and an optical receiver with associated connectors; and interface circuitry communicatively coupled to the pluggable optical transceiver and to the host device, wherein the interface circuitry is adapted to bridge data and power connectivity to the pluggable optical transceiver according to the first MSA, and wherein the pluggable optical transceiver is not compliant to the first MSA.

Abstract: Systems and methods for conveying wavelength tuning information from a pluggable optical transceiver to a host device determining the wavelength tuning information of the pluggable optical transceiver operating in the host device; appending the wavelength tuning information as part of existing data communicated between the pluggable optical transceiver and the host device; and providing the existing data with the wavelength tuning information incorporated therewith to the host device.

Abstract: Systems and methods for conveying wavelength tuning information from a pluggable optical transceiver to a host device determining the wavelength tuning information of the pluggable optical transceiver operating in the host device; appending the wavelength tuning information as part of existing data communicated between the pluggable optical transceiver and the host device; and providing the existing data with the wavelength tuning information incorporated therewith to the host device.

Abstract: Integrated performance monitoring (PM); optical layer operations, administration, maintenance, and provisioning (OAM & P); alarming; amplification, and the like is described in optical transceivers, such as multi-source agreement (MSA)-defined modules. A pluggable optical transceiver defined by an MSA agreement can include advanced integrated functions for carrier-grade operation which preserves the existing MSA specifications allowing the pluggable optical transceiver to operate with any compliant MSA host device with advanced features and functionality, such as Forward Error Correction (FEC), framing, and OAM&P directly on the pluggable optical transceiver. The advanced integrated can be implemented by the pluggable optical transceiver separate and independent from the host device.

Abstract: A latch mechanism for a pluggable optical module includes a slide disposed in the pluggable optical module, wherein the slide includes a front cylinder connected to a rear cylinder with a slide body therebetween and a post connected to the rear cylinder; a bail over a top of a front portion of the pluggable optical module and rotatably connected thereto, wherein the bail includes a first cutout portion on each side in which the front cylinder is moveably positioned therein; a ramp disposed within the pluggable optical module for sliding the rear cylinder thereon; and a notch disposed within the pluggable optical module for translating force from the post thereto responsive to the bail moving the front cylinder, the front cylinder applying force to the rear cylinder via the slide body, and the rear cylinder translating the force to the post.

Abstract: An apparatus adapted to operate a pluggable optical transceiver in a plurality of modulation schemes includes core circuitry adapted to interface with a host device, wherein the host device is adapted to support the pluggable optical transceiver; direct detection modulation circuitry communicatively coupled to the core circuitry; coherent modulation circuitry communicatively coupled to the core circuitry; and selection circuitry adapted to operate one of the direct detection modulation circuitry and the coherent modulation circuitry based on a selection depending on an application of the pluggable optical transceiver.

Abstract: A latch mechanism for a pluggable optical module includes a slide disposed in the pluggable optical module, wherein the slide includes a front cylinder connected to a rear cylinder with a slide body therebetween and a post connected to the rear cylinder; a bail over a top of a front portion of the pluggable optical module and rotatably connected thereto, wherein the bail includes a first cutout portion on each side in which the front cylinder is moveably positioned therein; a ramp disposed within the pluggable optical module for sliding the rear cylinder thereon; and a notch disposed within the pluggable optical module for translating force from the post thereto responsive to the bail moving the front cylinder, the front cylinder applying force to the rear cylinder via the slide body, and the rear cylinder translating the force to the post.

Abstract: A latch mechanism for a pluggable optical module includes a slide disposed in the pluggable optical module, wherein the slide includes a front cylinder connected to a rear cylinder with a slide body therebetween and a post connected to the rear cylinder; a bail over a top of a front portion of the pluggable optical module and rotatably connected thereto, wherein the bail includes a first cutout portion on each side in which the front cylinder is moveably positioned therein; a ramp disposed within the pluggable optical module for sliding the rear cylinder thereon; and a notch disposed within the pluggable optical module for translating force from the post thereto responsive to the bail moving the front cylinder, the front cylinder applying force to the rear cylinder via the slide body, and the rear cylinder translating the force to the post.

Abstract: According to one embodiment of the invention, fiber optic communications method is described. The method comprises a first operation of dynamically identifying frequencies at which spectral nulls occur in a signal received via an optical fiber, and thereafter, segregating communications over the optical fiber into a set of inter-null bands defined by the spectral nulls.

Abstract: Integrated performance monitoring (PM); optical layer operations, administration, maintenance, and provisioning (OAM&P); alarming; amplification, or the like is described in optical transceivers, such as multi-source agreement (MSA)-defined modules. An optical transceiver defined by an MSA agreement can include advanced integrated functions for carrier-grade operation which preserves the existing MSA specifications allowing the optical transceiver to operate with any compliant MSA host device with advanced features and functionality.

Abstract: A latch mechanism for a pluggable optical module includes a slide disposed in the pluggable optical module, wherein the slide includes a front cylinder connected to a rear cylinder with a slide body therebetween and a post connected to the rear cylinder; a bail over a top of a front portion of the pluggable optical module and rotatably connected thereto, wherein the bail includes a first cutout portion on each side in which the front cylinder is moveably positioned therein; a ramp disposed within the pluggable optical module for sliding the rear cylinder thereon; and a notch disposed within the pluggable optical module for translating force from the post thereto responsive to the bail moving the front cylinder, the front cylinder applying force to the rear cylinder via the slide body, and the rear cylinder translating the force to the post.

Abstract: Integrated performance monitoring (PM); optical layer operations, administration, maintenance, and provisioning (OAM&P); alarming; amplification, or the like is described in optical transceivers, such as multi-source agreement (MSA)-defined modules. An optical transceiver defined by an MSA agreement can include advanced integrated functions for carrier-grade operation which preserves the existing MSA specifications allowing the optical transceiver to operate with any compliant MSA host device with advanced features and functionality.

Abstract: According to one embodiment of the invention, fiber optic communications method is described. The method comprises a first operation of dynamically identifying frequencies at which spectral nulls occur in a signal received via an optical fiber, and thereafter, segregating communications over the optical fiber into a set of inter-null bands defined by the spectral nulls.

Abstract: One embodiment of the invention features a programmable gain stage in analog update circuitry to overcome the accuracy limitation of the circuit gain and the maintenance of small finite number of possible sequence estimates.

Abstract: Systems and methods for frequency-domain compensation in optical communication systems. In pre-equalization embodiments, the transmitter transforms the data stream into a frequency domain signal and applies a compensation filter before transforming it back into a pre-distorted time domain signal. As the pre-distorted time domain signal propagates through the optical channel, optical dispersion effects counter the pre-distortion, producing an equalized signal at the channel output. In post-equalization embodiments, the receiver transforms the received signal into a frequency domain signal and applies a compensation filter before transforming it back into an equalized time domain signal. Pre-equalization may prove less expensive due to the square-law characteristic of photodetectors employed by most receivers.

Abstract: According to one embodiment of the invention, a summing circuit comprises a first transmitter, a second transmitter, a first current offset circuit and a first transconductance amplifier. The first current offset circuit is coupled to the emitters of the first and second transistors. The first transconductance amplifier is coupled to the first current offset circuit.