Peter F Hallemeier

US Patent:

6341031, Jan 22, 2002

Filed:

Nov 4, 1999

Appl. No.:

09/428969

Inventors:

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

Assignee:

JDS Uniphase Corporation - San Jose CA

International Classification:

G02F 100

US Classification:

359237, 385 3, 385 9

Abstract:

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.

US Patent:

7248762, Jul 24, 2007

Filed:

Nov 7, 2005

Appl. No.:

11/268340

Inventors:

Peter Hallemeier - North Haven CT, US
Mark Coylar - Fountainville PA, US
Eitan Gertal - Gwynedd PA, US
Heider Ereifej - Chalfont PA, US

Assignee:

Optium Coporation - Chalfont PA

International Classification:

G02B 6/26
H04B 10/13

US Classification:

385 28, 385 50, 398142, 398143

Abstract:

A multi-mode optical fiber link is described. The multi-mode optical fiber link includes a first spatial mode converter that is coupled to a first single mode optical fiber. The first spatial mode converter conditions a modal profile of an optical signal propagating from the single mode optical fiber to the first spatial mode converter. A multi-mode optical fiber is coupled to the first spatial mode converter. A second spatial mode converter is coupled to an output of the multi-mode optical fiber and to a second single mode optical fiber. The second spatial mode converter reduces a number of optical modes in the optical signal. Both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal.

US Patent:

7283701, Oct 16, 2007

Filed:

Jan 7, 2004

Appl. No.:

10/707729

Inventors:

Peter Hallemeier - North Haven CT, US
Mark Colyar - Fountainville CT, US
Eitan Gertel - Gwynedd CT, US
Heider Naim Ereifej - Chalfont PA, US

Assignee:

Optium Corporation - Chalfont PA

International Classification:

G02B 6/26
G02B 6/42

US Classification:

385 28, 385 15, 385 27, 385 31, 385 39

Abstract:

A multi-mode optical fiber link is described that includes a single-mode optical fiber having an input that receives an optical signal for transmission through the multi-mode optical fiber link. A first spatial mode converter is coupled to the single-mode optical fiber. The first spatial mode converter conditions a modal profile of the optical signal for propagation through a multi-mode optical fiber. A multi-mode optical fiber is coupled to an output of the first spatial mode converter. A second spatial mode converter is coupled to an output of the multi-mode optical fiber. The second spatial mode converter reduces a number of optical modes in the optical signal. Both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal propagating through an output of the second spatial mode converter.

US Patent:

7269358, Sep 11, 2007

Filed:

Sep 9, 2003

Appl. No.:

10/605107

Inventors:

Peter Hallemeier - North Haven CT, US
Mark Colyar - Fountainville PA, US
Eitan Gertal - Gwynedd PA, US
Heider Ereifej - Chalfont PA, US

Assignee:

Optium Corporation - Chalfont PA

International Classification:

H04B 10/12

US Classification:

398143, 398147, 398186, 398194, 398200

Abstract:

An optical transmitter for an optical fiber transmission system is described. The optical transmitter includes an optical source that generates an optical signal having a wavelength at an output. An optical intensity modulator modulates the optical signal with an electrical modulation signal to generate a modulated optical signal at an output. At least one parameter of the optical intensity modulator is chosen to suppress at least one of phase and sideband information in the modulated optical signal. An optical fiber is coupled to the output of the optical intensity modulator. The suppression of the at least one of the phase and the sideband information in the modulated optical signal increases an effective modal bandwidth of the optical fiber.

US Patent:

20050025416, Feb 3, 2005

Filed:

Oct 2, 2003

Appl. No.:

10/605490

Inventors:

Peter Hallemeier - North Haven CT, US
Mark Coylar - Fountainville PA, US
Eitan Gertel - Gwynedd PA, US
Heider Ereifej - Chalfont PA, US

Assignee:

OPTIUM CORPORATION - Chalfont PA

International Classification:

G02B006/26
G02B006/293

US Classification:

385028000, 385024000

Abstract:

A multi-mode optical fiber link is described. The multi-mode optical fiber link includes a first spatial mode converter that is coupled to a first single mode optical fiber. The first spatial mode converter conditions a modal profile of an optical signal propagating from the single mode optical fiber to the first spatial mode converter. A multi-mode optical fiber is coupled to the first spatial mode converter. A second spatial mode converter is coupled to an output of the multi-mode optical fiber and to a second single mode optical fiber. The second spatial mode converter reduces a number of optical modes in the optical signal. Both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal.

US Patent:

63013991, Oct 9, 2001

Filed:

Feb 11, 1999

Appl. No.:

9/248609

Inventors:

Amaresh Mahapatra - Acton MA
Peter F. Hallemeier - Meriden CT
Hai Qing Li - Worcester MA

Assignee:

JDS Uniphase Corporation - San Jose CA

International Classification:

G02B 612

US Classification:

385 2

Abstract:

The present invention relates to integrated optic modulator devices and methods for their fabrication. Lithium niobate substrates have waveguides fabricated in them for propagating light energy, preferably in Mach Zhender architectures. The waveguides are bordered by adjacent electrode metallizations of low resistivity, such as copper and silver, to provide the devices with high gain bandwidth products to reduce the cost of drive electronics and simplify processing procedures. Gain bandwidth products exceed 4. 5. times. 10. sup. 5.

US Patent:

61988553, Mar 6, 2001

Filed:

Sep 21, 1999

Appl. No.:

9/400130

Inventors:

Peter Hallemeier - Meriden CT
Alfredo Yi-Yan - East Granby CT
Chris Hussell - Weatogue CT
Karl Kissa - Simsbury CT
Jack Lin - Scottsdale AZ

Assignee:

JDS Uniphase Corporation - San Jose CA

International Classification:

G02B 600
G02F 101
G02F 1035

US Classification:

385 2

Abstract:

An electro-optic device such as a Mach-Zehnder interferometer that includes a lithium niobate substrate having an optical waveguide that is formed in an upper surface of the substrate is described. The device includes a polymer buffer layer formed on the upper surface of the substrate. The polymer may be non-conductive or conductive. An electrode is formed on an upper surface of the buffer layer and is positioned to receive an RF signal that induces an electrical field in the optical waveguide. A conductive charge bleed-off layer may be formed between the buffer layer and the electrode in order to bleed-off pyroelectric charge. A semiconductor charge bleed-off layer may be formed between the substrate and the buffer layer.

US Patent:

58899006, Mar 30, 1999

Filed:

May 16, 1997

Appl. No.:

8/857633

Inventors:

Peter F. Hallemeier - Brookline MA

Assignee:

Ramar Corporation - Northborough MA

International Classification:

G02B 600
H04J 1406

US Classification:

385 11

Abstract:

Integrated optic tunable filters (IOTF) which for operation in many different wavelength ranges with different spectral properties. The IOTFs have one or more stages and/or channels formed in birefringent substrates and operate via polarization interferometric effects. Manufacture is via the use of variants of well-known processes used for making high speed integrated optic modulators. The IOTFs are for use in fiber-optic systems, although they can also be implemented in optic systems which are not fiber-optic. Other applications include wavelength division multiplexing, spectral analysis, and source output conditioning. Filtering may be active through the use of externally applied heat, stress, or electric fields.