Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2006-03-07
2006-03-07
Thomas, Tom (Department: 2815)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257S079000, C257S021000, C257S084000, C257S085000, C257S432000, C257S458000, C257S184000, C359S248000
Reexamination Certificate
active
07009210
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.
REFERENCES:
patent: 5051790 (1991-09-01), Hammer
patent: 5281829 (1994-01-01), Chinen
patent: 5689122 (1997-11-01), Chandrasekhar
patent: 5737474 (1998-04-01), Aoki et al.
patent: 5760419 (1998-06-01), Nabiev et al.
patent: 5946336 (1999-08-01), Mizutani et al.
patent: 6157037 (2000-12-01), Danielson
patent: 6252895 (2001-06-01), Nitta et al.
patent: 6331832 (2001-12-01), Rushing
patent: 6373872 (2002-04-01), Deacon
patent: 363111679 (1988-05-01), None
Dave Bharat
Ekambaram Chinnabbu
Lidsky David
Martinez Julio
Naik Gaurav
Alphion Corporation
Kaplan Gilman Gibson & Dernier LLP
Nguyen Joseph
Thomas Tom
LandOfFree
Method and apparatus for bit-rate and format insensitive... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for bit-rate and format insensitive..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for bit-rate and format insensitive... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3601494