Flat-top tunable filter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9874698
SERIAL NO

15152270

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A tunable PLC optical filter having sequentially connected thermally tunable Mach-Zehnder (MZ) interferometers is described. The cascade of MZ interferometers, each having a free spectral ranges matching ITU frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any other ITU frequency. Any other optical channel that may be present at any other ITU frequency is suppressed as a result. Another MZ interferometer in series with the cascade of interferometers including an asymmetric or variable coupler, is tuned to have low transmission at the center frequency of the selected optical channel.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • LUMENTUM OPERATIONS LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fondeur, Barthelemy San Jose, US 30 207
Frenkel, Leonid Palo Alto, US 8 16
Hua, Yimin Los Altos, US 29 360
Milinkovic, Vlatko Ottawa, CA 8 22
Shen, Jinxi San Ramon, US 18 207
Walker, David R Ottawa, CA 30 565
Zhang, Yu Kanata, CA 1645 7785

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jul 23, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 23, 2029
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00