James T Theodoras

6697397, Feb 24, 2004

Nov 15, 2001

09/987750

James Thomas Theodoras - Plano TX

Alcatel - Paris

H01S 313

372 2902, 372 32

The present invention comprises a dense wavelength division multiplexing system which uses an automatic level control feedback circuit or loop ( ) to maintain one of a plurality of selectable output power levels. In addition, to prevent the sidelobes of the individual channels from interfering with one another when power to the channel is increased, an optical bandpass filter ( ) is placed in the optical feedback path of the ALC loop ( ). Furthermore, if the frequency or wavelength drifts from the desired output wavelength, the output wavelength is tuned by cooling or heating the laser using a thermoelectric cooler ( ) which is part of a thermoelectric cooler loop ( ) that uses a calibration table to adjust for temperature/wavelength errors.

20030086457, May 8, 2003

Dec 12, 2002

10/317820

James Theodoras - Plano TX, US

H01S003/00

372/038020

The ultra-linear laser drive circuit of the present invention includes a transconductance operational amplifier circuit integrated with a low-pass filter. The transconductance operational amplifier circuit linearizes the output power of the laser drive circuit. The low-pass filter is a second-order low-pass filter which reduces the noise of the laser drive circuit.

20050254821, Nov 17, 2005

May 17, 2004

10/847948

James Theodoras - Plano TX, US

CISCO TECHNOLOLGY, INC. - San Jose CA

H04B010/00

398135000

Techniques for multiple channel optical transceivers for use in network devices are provided. In general, a row of optical emitters are disposed adjacent to a row of optical detectors in order to provide increased bandwidth and reduced optical crosstalk. Each row can be electrically coupled to an associated transmitting electronic board or detecting electronic board to reduce electronic crosstalk. The configuration of the optical emitters and detectors allow enhanced flexibility in dressing out the optical fibers and routing them to other network devices.

20060140553, Jun 29, 2006

Feb 10, 2006

11/276045

James Theodoras - Plano TX, US
Matthew Heston - Plano TX, US

CISCO TECHNOLOGY, INC. - San Jose CA

G02B 6/36

385092000

Optical transceiver modules with multiple channel connection with connectors on a motherboard of a line card for network devices, such as a switch, router, crossconnect and the like, are presented. The modules have staggered electronic boards which can engage the connectors which are laterally displaced on the motherboard. The connectors are also arranged so that one of them can engage an optical transceiver module in an SFP connection so that the motherboard connectors are compatible with multiple channel and single channel (SFP) connections.

20060177225, Aug 10, 2006

Feb 4, 2005

11/051699

Loukas Paraschis - Mountain View CA, US
James Theodoras - Plano TX, US
Ornan Gerstel - Los Altos CA, US

Cisco Technology, Inc. - San Jose CA

H04J 14/02

398087000

In a WDM optical network DML signals are sideband filtered to compensate for chirp with a feedback loop carrying signals from a monitor unit which helps maintain the sideband filter offset from a peak output of the DMLs. Network components with filtering characteristics, such as AWGs, can be used as the sideband filters. The monitor units monitor the Q-factors or BERs of the filtered signals and the sideband offset is maintained by temperature control of the sideband filters with respect to the DMLs.

20070263707, Nov 15, 2007

May 15, 2006

11/383348

James Theodoras - Plano TX, US

H04L 5/16

375220000

A method, an apparatus and a system for gigabit Ethernet (GbE) using only 2 pairs of wires for a single communications link are described. This network communication may be referred to as 2-pair 1000Base-T. GbE using only 2 wire pairs per link may offer increased port density over a conventional 1000Base-T link. As an alternative, 2-pair 1000Base-T may also provide increased link bandwidth over the existing 1000Base-T standard. When a given number of conventional links in a system are replaced by the same number of 2-pair 1000Base-T links, the system bandwidth may also be consequently increased. Transformers and power supplies may be combined with GbE utilizing only two wire pairs to provide power over Ethernet (PoE) solutions.

20070274351, Nov 29, 2007

May 25, 2006

11/420356

James T. Theodoras - Plano TX, US

H04J 3/02

370537

A method, an apparatus, and a system where multiple lower bandwidth optic Ethernet (e.g. 1000Base-FX) signals can be interleaved or encoded onto a single fiber optic link by overclocking the physical layer elements in such a manner as to be transparent to the data link layer and other higher network layers in the Open Systems Interconnection Reference Model (OSI Model) are provided. Such embodiments may provide increased port density over the existing fiber optic gigabit Ethernet (GbE) standards. In embodiments where multiple GbE signals are not channelized, overclocking the physical layer elements may provide increased bandwidth for a single link over existing fiber optic GbE standards.

20100014268, Jan 21, 2010

Jul 17, 2008

12/174713

Mohammad Reza Danesh Kadivar - Santa Clara CA, US
Hong Huynh - Fremont CA, US
Saeed Seyed - Los Altos Hills CA, US
James T. Theodoras II - San Jose CA, US
Susheela Narasimhan - Milpitas CA, US

H05K 7/02

361807

In one embodiment, the present disclosure refers to an apparatus comprising a bracket having a base configured to receive and hold a first electronic element. The bracket comprises at least one flange extending from the base and at least one guide acting to align the bracket and first electronic element with a second electronic element. The bracket also comprises at least one fastener aligned with the at least one guide and acting to engage and hold the second electronic element.