Oplink Communications Patent Applications

COMPACT WDM OPTICAL MODULES

Granted: December 29, 2016
Application Number: 20160380406
Methods, systems, and apparatus, for optical communication. One apparatus includes a Fabry-Perot (FP) laser diode assembly coupled to a first port of a circulator; an optical amplifier coupled to a second port of the circulator; a wavelength division multiplexer (WDM) filter coupled to a third port of the circulator; and a Faraday rotator mirror coupled to the WDM filter.

MEMS OPTICAL SWITCH

Granted: June 2, 2016
Application Number: 20160154183
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for optical switching. One of the optical switches includes a plurality of optical fibers positioned in an array, the plurality of fibers including one or more input fibers and a plurality of output fibers; a microelectromechanical (MEMS) mirror configured to controllably reflect light from an input fiber to a particular target output fiber of the plurality of output fibers, wherein a position…

MEMS FIBER OPTICAL SWITCH

Granted: May 19, 2016
Application Number: 20160139340
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for optical switching. One of the optical switches includes a plurality of optical fibers positioned in an array, the plurality of fibers including one or more input fibers and a plurality of output fibers; a microelectromechanical (MEMS) mirror configured to controllably reflect light from an input fiber to a particular target output fiber of the plurality of output fibers, wherein a position…

SECURITY SYSTEM ACCESS DETECTION

Granted: October 1, 2015
Application Number: 20150279198
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for access and control of networked devices. In one aspect, a method includes receiving a request for access to a security system device; determining whether the device is set to a first mode or a second mode; and in response to determining that the device is in the second mode, generating one or more notifications to authorized users identifying the access to the security device.

2x2 Wavelength Selective Switch Array

Granted: July 30, 2015
Application Number: 20150212275
Methods, systems, and apparatus for optical wavelength selective switching. One 2×2 wavelength selective switch array includes a plurality of optical input ports configured to receive one or more optical input beams, and a plurality of optical output ports configured to receive one or more one or more optical output beams wherein the plurality of optical input ports and optical output ports form an array of 2×2 optical port pairs; one or more optical conditioning and wavelength…

Switchable-Gain Optical Amplifier

Granted: June 25, 2015
Application Number: 20150180196
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for optical communications. One optical amplifier includes an input port; a bar-cross switch optically coupled to the input port; a first gain stage optically coupled between first port of the bar-cross switch and to an output port; and a secondary gain stage optically coupled between a second port and a third port of the bar-cross switch, wherein in a bar-state of the bar-cross switch the…

SECURITY SYSTEM DEVICE POWER MANAGEMENT

Granted: May 14, 2015
Application Number: 20150131500
Methods, systems, and apparatus are provided for power management. The methods include detecting a triggering event at a sensor device of a security system; activating a wireless transmitter/receiver from a low power mode; detecting a broadcast beacon frame from an access point device; transmitting a probe request frame that includes triggering event data; and returning the wireless transmitter/receiver to a low power mode.

TUNABLE OPTICAL FILTER

Granted: December 11, 2014
Application Number: 20140362442
Methods, systems, and apparatus for optical fiber communications. One tunable optical filter includes a light inputting assembly and a light receiving assembly; an adjustable cavity length assembly arranged between the light inputting assembly and the light receiving assembly, wherein the adjustable cavity length assembly includes an adjustable length device, a first substrate, and a second substrate, wherein the first substrate and the second substrate are positioned parallel to each…

SECURITY SYSTEM POWER MANAGEMENT

Granted: September 18, 2014
Application Number: 20140266767
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for power management. One of the methods includes determining that there is a loss in electricity to a security system management device; entering low power state; receiving a wireless sensor alert while in the low power state; in response to the alert: returning to normal power state to transmit an alarm to a service provider system, and returning to low power state after transmitting the…

Twin Multicast Switch

Granted: September 18, 2014
Application Number: 20140270760
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for optical switching. An optical switch device includes a first multicast switch unit; and a second multicast switch unit, wherein each of the first and second multicast switch units respectively include: multiple optical input ports; multiple optical switches; multiple optical splitters/combiners; and multiple optical output ports.

CONFIGURING SECURE WIRELESS NETWORKS

Granted: September 18, 2014
Application Number: 20140281478
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for configuring secure wireless networks. One of the methods includes receiving, at a security system management device, protocol and key information for establishing a connection as a client device to the wireless IP device, wherein the protocol and key information is received in response to a user transmitting an identifier for the IP device to a service provider system; establishing…

INTERFACES FOR SECURITY SYSTEM CONTROL

Granted: September 18, 2014
Application Number: 20140281990
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for controlling security systems. One of the methods includes receiving, at a mobile device, an input to present camera video content; presenting, in a user interface, a first array of video content, wherein the respective video content is associated with a first security system location; receiving a user input to present a second array of video content, wherein the respective video content is…

SELF-CONFIGURING WIRELESS NETWORK

Granted: September 4, 2014
Application Number: 20140247941
Methods, systems, and apparatus, are provided for wireless networking. In some implementations, a self-configuring wireless system includes one or more wireless network devices; and an access point device, wherein the one or more wireless network devices are each preconfigured with a respective key, and wherein the access point device is configured to obtain the respective keys so as to enable the access point device to establish a secure wireless network with the one or more network…

REDUNDANT CONTROL OF SELF-CONFIGURING WIRELESS NETWORK

Granted: July 24, 2014
Application Number: 20140204727
Methods, systems, and apparatus, are provided for wireless networking. In some implementations, a self-configuring wireless system includes one or more wireless network devices; a primary access point device; and a secondary access point device; wherein the primary access point device and the at least one wireless network device are preconfigured with a respective key so as to enable the primary access point device to establish a secure wireless network with the at least one network…

MAGNETO-OPTIC SWITCH

Granted: May 22, 2014
Application Number: 20140139918
Systems, methods, and apparatus for optical switching. In some implementations, a magneto-optic switch includes multiple optical components positioned in order along a light path including: a single fiber optical collimator, a first birefringent optic crystal, a first half wave plate assembly, a polarization rotation assembly, a second half wave plate assembly, a second birefringent optic crystal, and a dual fiber optic collimator, wherein a first side of the polarization rotation…

OPTICAL DEPOLARIZER

Granted: January 16, 2014
Application Number: 20140016199
Methods, systems, and apparatus, for optical depolarization. One optical depolarizer includes a light-combining module comprising a birefringent prism, wherein an optic axis of a first crystal of the birefringent prism forms a 90° angle with an optic axis of a second crystal of the birefringent prism; and a depolarization module, wherein the depolarization module is disposed at a light emitting end of the light-combining module, the depolarization module comprising a light splitting…

WAVELENGTH SELECTIVE SWITCH

Granted: September 12, 2013
Application Number: 20130235283
Methods, systems, and apparatus, for optical switching. In one aspect, a wavelength selective switch includes one or more optical input ports; one or more optical output ports; a first optical wavelength dispersion element configured to separate the plurality of wavelength channels of the input optical beam; a second optical wavelength dispersion element configured to combine two or more separate optical beams each having one or more different wavelengths, into a combined beam having the…

FIBER NETWORK MONITORING

Granted: October 22, 2009
Application Number: 20090263123
This specification describes technologies relating to optical fiber network monitoring. A monitoring system is provided. The monitoring system includes a fiber network including a plurality of branch fibers and a main station coupled to a main fiber of the fiber network to broadcast communications signals to a plurality of branch stations. The monitoring system includes a monitoring device configured to transmit a monitoring signal and detect reflected portions of the monitoring signal…

METHOD FOR DETECTING A SIGNAL ON A PASSIVE OPTICAL NETWORK

Granted: June 4, 2009
Application Number: 20090142067
A transceiver assembly is provided for use in an optical telecommunications network. The circuitry arrangement in the transceiver of the present invention generates a ranging signal that is transmitted along the fibers attached thereto and then filters the return signal in an manner that eliminates virtually all of the noise effects found on the fiber to provide a highly reliable timing signal for an accurate delay calculation. A band pass filter is supplied in line before the input…

Multi-port circulator

Granted: November 4, 2004
Application Number: 20040218846
An extendable four-port circulator includes a middle birefringent crystal, a first birefringent crystal, a first non-reciprocal device, a second birefringent crystal, and a second non-reciprocal device. The first non-reciprocal device is coupled to the first birefringent crystal. The second non-reciprocal device is coupled to the second birefringent crystal. The middle birefringent crystal includes a first surface, a second surface, a third surface, and a fourth surface. The first…