Finisar

About: Finisar is a company organization based out in Sunnyvale, California, United States. It is known for research contribution in the topics: Signal & Laser. The organization has 900 authors who have published 1523 publications receiving 22634 citations.

Precision optical filter with a ball-end joint

Abstract: A portion of an optical device is disclosed. In one aspect of the present invention, the device comprises a cylinder formed about an axis having first and second ends, the second end being formed so as to define a segment of an inward-facing concave spherical surface. A module is provided defining a cylinder formed about the axis and having first and second ends and an optical element disposed therein about the axis. The first end of the module is formed so as to define a segment of an outward-facing convex spherical surface, and the convex surface is complimentary in shape to the concave surface. The complimentary concave and convex surfaces of the cylinder and the module are mated so as to allow the optical element to be aligned about a plane forming a predetermined angle with the axis.

Using a network portal to store diagnostic data

Abstract: A data analyzing system. The data analyzing system includes a number of data capture devices. The data capture devices may be for example, at different points in a network or for testing different components in a system. The data analyzing system further includes a distributed storage system connected to the data capture devices. The distributed storage system includes one or more portal servers. The distributed storage system further includes a number of storage servers coupled to the one or more portal servers. The one or more portal servers are configured to direct data from the data capture devices to the storage servers.

Asynchronous digital signal combiner and method of combining asynchronous digital signals in cable television return path

Abstract: A device for and method of combining asynchronous digital return signals from multiple nodes of a CATV return path is disclosed. The signals are digitally filtered, re-sampled at a common output rate and digitally combined (e.g., summed) without being converted to analog form. The combined signal can be provided to an optical data transmitter for transmission over an optical fiber to the head end. Because the device of the present embodiment does not require analog hardware (e.g., converters, D/A converters and analog summers), it is smaller, costs less and consumes less power than conventional CATV return signal combiners.

Thermally compensated wavelength division demultiplexer and multiplexer and method of fabrication thereof

Abstract: Thermally compensated wavelength division demultiplexers and multiplexers are disclosed. In one aspect, thermally compensated optical systems for use in an optical network are disclosed. The systems include a diffraction grating coupled to a grating mount having a temperature coefficient. The systems further include an optical fiber coupled to a fiber mount having a temperature coefficient and a lens assembly coupled to a lens mount. The lens mount is operable to position the lens assembly between the fiber mount and the grating mount and includes a substantially similar temperature coefficient to the fiber mount.

Fiber optic link having an integrated laser and photodetector chip

Abstract: A fiber optic communications link is disclosed that can include first and second nodes operably connected by a multi-mode optical fiber and that utilizes two distinct optical wavelengths for enabling the bidirectional transfer of data via the optical fiber between the first and second nodes. Each node can include an integrated transmitter/receiver chip that includes a substrate, an optical receiver or transmitter, a filter, and an optical transmitter or receiver. The transmitter of the chip at the first node can be configured to transmit, via the optical fiber, optical data on one wavelength for conversion to an electrical signal by the receiver of the chip at the second node. Simultaneously, the transmitter of the chip at the second node can be configured to transmit, via the optical fiber, optical data on another wavelength for conversion to an electrical signal by the receiver of the chip at the first node.