Richard M Manderscheid

US Patent:

20050201665, Sep 15, 2005

Filed:

Mar 10, 2004

Appl. No.:

10/796955

Inventors:

Richard Manderscheid - Dallas TX, US

International Classification:

G02B006/12
H04B001/38
H01S003/08

US Classification:

385014000, 455073000, 455078000, 455347000, 372092000, 372096000, 372108000

Abstract:

A monolithically integrated optic triplexer is described herein that can be mounted in one transistor outline (TO) can and can be used in a passive optical network. The monolithically integrated optic triplexer includes: (1) an emitting laser that is capable of transmitting a 1310+/−10 nm optical signal; (2) a first photodiode that is capable of receiving a 1490+/−5 nm optical signal; and (3) a second photodiode that is capable of receiving a 1550+/−5 nm optical signal. In one embodiment, the emitting laser is placed on top of the two photodiodes which are monolithically integrated on a substrate. And in another embodiment, the emitting laser and two photodiodes are all monolithically integrated on a substrate. The monolithically integrated optic triplexer may also include a thin film filter that is located between the emitting laser and the first photodiode. In addition, the monolithically integrated optic triplexer may include a thin film filter that is located between the first photodiode and the second photodiode. Also described herein is a method for making the monolithically integrated optic triplexer.

US Patent:

20050249505, Nov 10, 2005

Filed:

May 10, 2004

Appl. No.:

10/842120

Inventors:

Richard Manderscheid - Dallas TX, US
David Butler - Richardson TX, US

International Classification:

H04B010/02

US Classification:

398177000

Abstract:

A spectral tilt measurement system and method operable with an optical medium. In one embodiment, an optical signal is split into bands whose relative power ratios are used in determining spectral tilt. In another embodiment, each channel of the optical signal is modulated using an ID tone that is used for measuring spectral power of each identified channel. Spectral tilt is determined by comparing the relative channel powers across the optical medium.