Gregory J Mcbrien, 67Moultonborough, NH

6341031, Jan 22, 2002

Nov 4, 1999

09/428969

Gregory J. McBrien - Cromwell CT
Karl M. Kissa - Simsbury CT
Peter Hallemeier - Meriden CT
Thomas Joseph Gryk - Windham CT

JDS Uniphase Corporation - San Jose CA

G02F 100

359237, 385 3, 385 9

An optical pulse generator having a high order transfer function that comprises a first and a second nested interferometric modulator, each modulator comprising an optical input, an electrical input, a first arm, a second arm and an optical output. The second interferometric modulator is optically coupled into the second arm of the first interferometric modulator. The optical output of the first interferometric modulator generates pulses at a repetition rate that is proportional to a multiple of a frequency of an electrical signal applied to the electrical input of at least one of the first and second interferometric modulator and at a duty cycle that is inversely proportional to the order of the transfer function of the optical pulse generator. The multiple may be any integer equal to or greater than one.

6449080, Sep 10, 2002

Mar 8, 2000

09/520874

Gregory J. McBrien - Cromwell CT
Thomas Joseph Gryk - Windham CT
Karl M. Kissa - Simsbury CT
Ed Wooten - Windsor CT
Russell Fuerst - East Windsor CT

JDS Uniphase Corporation - San Jose CA

G02F 103

359245, 359322, 385 2, 385 3, 385 8

A co-planar waveguide interferometric electro-optic modulator that reduces the bias point sensitivity of the modulator to ambient temperature and to applied RF is described. The modulator includes a first and second waveguide that are formed in an electro-optic substrate. A RF electrode is positioned on the electro-optic substrate between the first and the second waveguide. A ground electrode that may include a slot is positioned proximate to the second waveguide. A guard ground electrode is positioned proximate to the first waveguide to sink heat from the RF electrode and may also balance the thermal stress in the two waveguides. A dielectric material may also be positioned proximate to the first waveguide to balance the thermal stress in the two waveguides.

6483953, Nov 19, 2002

May 11, 1999

09/309444

Gregory J. McBrien - Cromwell CT
Karl M. Kissa - Simsbury CT
Ed Wooten - Windsor CT

JDS Uniphase Corporation - San Jose CA

G02F 1035

385 2, 385 3

An electro-optic device including an optical waveguide formed in an electro-optic material that propagates an optical signal along a first direction of propagation is described. The device also includes an electrical waveguide formed in the electro-optic material and positioned co-linear relative to the optical waveguide and in electromagnetic communication with the optical waveguide, where the electrical waveguide also propagates the electrical signal in the first direction of propagation. A compensation network is electrically coupled to the electrical waveguide at a junction and propagates the electrical signal in a second direction of propagation that is substantially non-co-linear with the first direction of propagation. In operation, the compensation network modifies at least one of a phase or an amplitude of the electrical signal at the junction relative to a phase or an amplitude of the accumulated modulation on the optical signal at the junction, respectively, and then returns the modified electrical signal to the electrical waveguide.

6580840, Jun 17, 2003

Sep 22, 2000

09/668401

Gregory J McBrien - Cromwell CT
Karl M. Kissa - Simsbury CT
Timothy U. Horton - Weatogue CT

JDS Uniphase Corporation - Ottawa

G02F 1035

385 2, 385 3

A high-efficiency electro-optic modulator with an equalized frequency response is described. The modulator includes an optical waveguide formed in an electro-optic material that propagates an optical signal along a first direction of propagation. An electrical waveguide is formed on the electro-optic material and positioned generally co-linear relative to the optical waveguide and in electromagnetic communication with the optical waveguide. The geometry of the electrical waveguide is selected to achieve a modulation efficiency at a frequency in a bandwidth of a digital spectrum. A compensation network is electrically coupled to the electrical waveguide at a junction. The compensation network reduces an electro-optic response of the electro-optic modulator below the mean frequency bandwidth of the digital spectrum, thereby causing an increase of the electro-optic response above the mean frequency of the digital spectrum.

6646776, Nov 11, 2003

Nov 23, 2002

10/065833

Steve Cheung - Storrs CT
Karl Kissa - Simsbury CT
Gregory J. McBrien - Cromwell CT

JDS Uniphase Corporation - San Jose CA

G02F 103

359254, 385 8

The invention relates to apparatus and methods for suppressing high frequency resonance in an electro-optical device. The electro-optical device includes an optical waveguide formed in the upper surface of a substrate. The device further includes a plurality of electrically floating electrode segments that are positioned on the substrate to intensify an electric field in the optical waveguide. The device also includes a plurality of electrically grounded electrode segments that are positioned on the substrate for prohibiting modal conversion and propagation of high order modes in the plurality of electrically grounded electrode segments and in the plurality of electrically floating electrode segments, thereby suppressing modal coupling to the substrate. The device further includes a buffer layer formed on the upper surface of the substrate and a driving electrode formed on an upper surface of the buffer layer for receiving an RF signal that induces the electric field in the optical waveguide.

6864986, Mar 8, 2005

May 31, 2002

10/160983

Bruce Nyman - Freehold NJ, US
Gregory J. McBrien - Glastonbury CT, US

JDS Uniphase Corporation - San Jose CA

G01B009/02

356484, 356 731, 356432

A mixed frequency-based method and arrangement for characterizing an electro-optic modulator is configured to vary the tuning of a laser beam, to be modulated by the optical modulator, simultaneously with and in the same manner as the variation in frequency of the modulation signal. The effect of this dual modulation approach is a modulated laser beam, in which the frequency difference between the carrier component of the laser beam and sideband energy produced by the modulation signal is controlled so that it falls within the sensitivity range of a relatively low cost optical detector.

6885780, Apr 26, 2005

Dec 17, 2002

10/248086

Steve Cheung - Storrs CT, US
Karl Kissa - Simsbury CT, US
Gregory J. McBrien - Cromwell CT, US

JDSU Uniphase Corporation - San Jose CA

G02F001/035

385 2, 385 8

The invention relates to suppression of high frequency resonance in an electro-optical device. The electro-optical device includes an optical waveguide formed in a substrate and a plurality of electrically floating electrode segments that are positioned on the substrate to intensify an electric field in the optical waveguide. The device also includes a RF ground electrode that is positioned on the substrate. The RF ground electrode defines a slot having a shape that suppresses modal conversion and propagation of high order modes in the RF ground electrode and in the plurality of electrically floating electrode segments, thereby suppressing modal coupling to the substrate. The device further includes a buffer layer formed on the upper surface of the substrate, on the plurality of electrically floating electrode segments, and in the slot. A driving electrode receives a RF signal that induces-the electric field in the optical waveguide.

6917455, Jul 12, 2005

Apr 25, 2003

10/423825

Gregory J. McBrien - Glastonbury CT, US
Joseph Farina - Southwick MA, US
John D. Borla - West Hartford CT, US

JDS Uniphase Corporation - San Jose CA

G02F001/03

359238, 359239, 359248

An optical transmitter architecture has a return-to-zero (RZ) laser modulator coupled in cascade with a non-return-to-zero (NRZ) laser modulator. Modulator bias and electronic phase delay bias are controlled using dither-based feedback, so as to align the phase of the RZ clock signal with that of the NRZ data. A first method uses an RZ quadrature AM dither or an RZ “hillclimber” bias dither, to apply a relatively low frequency dither signal to a variable RF delay for the RZ clock signal applied to the RZ modulator or NRZ data signal applied to the NRZ modulator. A second method is an RZ quadrature AM dither or “hillclimber” bias dither scheme that applies equal amplitude and opposite phase dither signals to perform complementary modulation of both the RZ and NRZ MZ modulators simultaneously.