Avago Technologies General IP (singapore) Pte. Ltd.

David Chak Wang Hui

Xiaozhong Wang

Bing Shao

Ye Chen

Seng-Kum Chan

Pengyue Wen

Kit Cham

An optical transceiver module includes N light sources, N light detectors, a bidirectional fiber port, and an optical network having 2N&#x2212;1 wavelength-selective elements. The number 2N represents the total number of transmit and receive channels in a bidirectional system in which transmit and receive signals corresponding to the transmit and receive channels. Each light source corresponds to one transmit channel and emits an optical transmit signal having a unique transmit wavelength. Each light detector corresponds to one receive channel and detects an optical receive signal having a unique receive wavelength. The optical network couples each light source to the bidirectional fiber port via a corresponding transmit path through the optical network. The optical network further couples each light detector to the bidirectional fiber port via a corresponding receive path through the optical network. Each transmit and receive path includes some of the wavelength-selective elements.

Bidirectional optical data communications module

An optical communication system includes a transceiver with a light source, a transition lens and an optical medium. Each of the light source, the transition lens and the optical medium define a corresponding axis. The light source defines a normal launch axis. The transition lens defines an optical axis. The optical medium defines a longitudinal axis. A relative misalignment from a coaxial alignment of the corresponding axes of at least one the light source, the transition lens and the optical medium is used to reduce a back reflection incident at the light source. Such misalignments can be achieved by one or both of angular adjustments and offsets of the axes.

Optical communication systems and methods for minimizing reflective feedback

A bidirectional optical communication system includes first and second transceivers arranged at opposed ends of an optical medium. Opto-electronic devices within the transceivers are arranged on respective mounting surfaces of planar substrates. First and second optical assemblies couple the respective transceivers to the optical medium. The optical assemblies include first and second optical elements arranged along an axis normal to the substrates. The first optical element is transparent to the optical signal transmitted from the respective transceiver and redirects the received optical signal from the other transceiver. The optical assemblies enable a single alignment of the opto-electronic devices and the optical medium.

Dual-wavelength bidirectional optical communication system and method for communicating optical signals

An adapter includes a housing with opposed openings for receiving a first connector that is mechanically and optically mateable with a second connector to form one or more optical signal communication links. The housing is arranged with a slot for receiving a flexible material having an index of refraction that approximates the index of refraction of aligned pairs of optical fibers. The flexible material is appropriately sized to cover the fibers from each of the connectors. The optical fiber ends of a respective connector can be cleaned by inserting the connector in the adapter and advancing the flexible material. Once the optical fiber ends of both connectors have been cleaned and the flexible material further advanced, the connectors can be reinserted in the adapter to establish an optical signal link between the optical fibers.

Adapter for cleaning an optical junction and reducing optical back reflection

In an optical data communication system transmitter, in which a laser is driven with a laser modulation signal in response to a serial data stream, the laser driver adds peaking to a bit other than the first bit following a bit transition.

Laser driver peaking system and method for optical communication systems

A controller and methods for adaptively adjusting a dispersion compensation circuit in a receiver of a communication link are disclosed. The controller receives a signal from an error detector coupled to the receiver. The controller includes a logic engine that provides configuration information to the dispersion compensation circuit. The configuration information defines a digital filter in response to at least one tap constraint and at least one coefficient constraint. In an example embodiment, the logic engine generates a measure of residual inter-symbol interference and a measure of a noise enhancement penalty and iteratively provides a set of adjusted coefficient values that when applied in the digital filter will result in an equalized receiver output signal that minimizes a mathematical combination of the measure of the residual inter-symbol interference and the measure of the noise enhancement penalty. Alternatively, for bandwidth limited channels, the controller provides a predetermined set of coefficient values.

Growing community of inventors

Santa Clara, CA, United States of America

David Chak Wang Hui