1
Charles Mao
Andrew Niall Robinson, Xiaoping Charles Mao: PMD characterization across multiple optical channels of an optical link. MCI WorldCom, December 10, 2002: US06493116 (6 worldwide citation)

A fiber optic communications link having PMD characterization across multiple optical channels to identify PMD problems. The communications link has adaptive PMD controls employed along the optical link, whereby PMD phenomena detected by instruments, such as PMD compensators, are interpreted as bein ...


2
Charles Mao
Andrew Niall Robinson, Xiaoping Charles Mao: PMD characterization across multiple optical channels of an optical link. Harrity & Snyder, March 28, 2002: US20020036811-A1

A fiber optic communications link having PMD characterization across multiple optical channels to identify PMD problems. The communications link has adaptive PMD controls employed along the optical link, whereby PMD phenomena detected by instruments, such as PMD compensators, are interpreted as bein ...


3
Charles Mao
Andrew Niall Robinson, Xiaoping Charles Mao: PMD characterization across multiple optical channels of an optical link. WorldCom, March 9, 2004: US06704510

A fiber optic communications link having PMD characterization across multiple optical channels to identify PMD problems. The communications link has adaptive PMD controls employed along the optical link, whereby PMD phenomena detected by instruments, such as PMD compensators, are interpreted as bein ...


4
Andrew Niall Robinson: Bidirectional dispersion compensation system. MCI Communications Corporations, December 5, 2000: US06157477 (45 worldwide citation)

A bidirectional chromatic dispersion system includes an optical circulator that includes four ports. A first port is coupled to a first optical transmission medium and a third port is coupled to the second optical transmission medium. A first dispersion compensating grating is coupled to a second po ...


5
Andrew Niall Robinson, John A Fee: Method and system for equalizing PMD using incremental delay switching. MCI Communications Corporation, October 13, 1998: US05822100 (31 worldwide citation)

A polarization mode compensation system and method using optical switch elements to establish incremental delays between different polarization modes of an optical data signal is provided. A polarization mode separator separates the optical data signal into first and second orthogonally polarized op ...


6
John A Fee, Shoa Kai Liu, Andrew Niall Robinson, Reddy Urimindi: Dynamically reconfigurable optical interface device using an optically switched backplane. MCI Corporation, March 10, 1998: US05726788 (31 worldwide citation)

An optical interface device dynamically reconfigures a telecommunications network. The device includes an optically switched backplane connected between two stages of an optical tapped amplifier. Various modules may be plugged into the backplane for performing selective processing of the optical sig ...


7
John A Fee, Andrew Niall Robinson: Bi-directional all-optical regenerator. MCI Communications Corporation, November 13, 2001: US06317232 (14 worldwide citation)

An all-optical system for regenerating a first optical signal carried in a first direction on an optical transmission medium and a second optical signal carried in a second direction on the optical transmission medium includes a bi-directional clock recovery loop and a bi-directional optical gate. T ...


8
Enis Akbaba, John Jacob, Andrew Niall Robinson, John Zyskind, Erik Robert Thoen: Optical communications system with fiber break detection in the presence of Raman amplification. JDS Uniphase Corporation, Allen Dyer Doppelt Milbrath & Gilchrist P A, May 15, 2007: US07218442 (4 worldwide citation)

An optical communications system initiates automatic power reduction by selecting a portion of a Raman optical pumping signal from optical signals propagating on an optical fiber span. A signal related to a magnitude of the selected portion of the Raman optical pumping signal is generated. Power of ...


9
John Zyskind, Andrew Niall Robinson, Seo Yeon Park, Clement Dowd Burton, John Jacob, Erik Robert Thoen: Optical amplification system for variable span length WDM optical communication systems. JDS Uniphase Corporation, Allen Dyer Doppelt Milbrath & Gilchrist P A, February 6, 2007: US07173756

An optical communications system includes a plurality of optical fiber spans. An optical loss of one of the plurality of optical fiber spans is different from an optical loss of another one of the plurality of optical fiber spans. At least one of the plurality of optical fiber spans includes an opti ...


10
Enis Akbaba, John Jacob, Andrew Niall Robinson, John Zyskind, Erik Robert Thoen: Optical communications system with fiber break detection in the presence of raman amplification. Optovia Corporation, Rauschenbach Patent Law Group, September 7, 2006: US20060198016-A1

An optical communications system initiates automatic power reduction by selecting a portion of a Raman optical pumping signal from optical signals propagating on an optical fiber span. A signal related to a magnitude of the selected portion of the Raman optical pumping signal is generated. Power of ...