The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2006
Filed:
May. 09, 2001
Method and apparatus for bit-rate and format insensitive performance monitoring of lightwave signals
Jithamithra Sarathy, Eatontown, NJ (US);
Chinnabbu Ekambaram, Freehold, NJ (US);
David Lidsky, Sea Bright, NJ (US);
Bharat Dave, Howell, NJ (US);
Boris Stefanov, Gillette, NJ (US);
Tan B. Thai, Jackson, NJ (US);
Ronald Simprini, Red Bank, NJ (US);
Julio Martinez, Oakhurst, NJ (US);
Gaurav Naik, Eatontown, NJ (US);
Jithamithra Sarathy, Eatontown, NJ (US);
Chinnabbu Ekambaram, Freehold, NJ (US);
David Lidsky, Sea Bright, NJ (US);
Bharat Dave, Howell, NJ (US);
Boris Stefanov, Gillette, NJ (US);
Tan B. Thai, Jackson, NJ (US);
Ronald Simprini, Red Bank, NJ (US);
Julio Martinez, Oakhurst, NJ (US);
Gaurav Naik, Eatontown, NJ (US);
Alphion Corporation, Eatontown, NJ (US);
Abstract
A method and apparatus for a tunable optical spectrum analyzer that can measure the optical spectrum of a demultiplexed DWDM signal are presented. The signal level and Optical Signal to Noise Ratio (OSNR) of an individual channel of the DWDM signal can be obtained from the measured optical spectrum. The device employs a rapid tuning and detection technique to obtain the optical spectrum of the incoming signal. In a preferred embodiment the apparatus is fabricated on a single chip resulting in a compact measurement device. Using the device of the preferred embodiment, single channel OSNR can be determined in as small a time interval as approximately 225 microseconds. Using an array of these devices an entire DWDM mixed signal can be monitored as to OP and OSNR in the same time interval.