Thanks for that. As a single data point I always see these (relaxation/ gain swapping) oscillations in the laser diodes we use at ~6-7 GHz. It shows up as side bands in the spectrum.
George H.
Ping JL: High-Voltage White LEDs
Oct 15, 2014
50 Replies
given
Very good info. Thanks!
Actually there are plenty of 10Gb/s lasers for Ethernet at shorter wavelengths.
?-)
Yes there are, mostly at 850 nm, as I noted upthread. However, VCSELs typically go through one or several mode transitions as they turn on, which I would expect will degrade the jitter compared with a lithium niobate modulator and a well-isolated CW laser.
Cheers
Phil Hobbs
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
There are standard fiberoptical transceiver things, with some electronics inside, that slide into mating PCB sockets, sort of like overgrown SC fiber connectors. It might make sense to buy them and not re-invent something difficult. Being telecom parts, they are unfortunately AC coupled all the way through.
Can't recall what they are called.
John Larkin Highland Technology, Inc
picosecond timing precision measurement
jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com
There are various transceiver standards for that. I'm sort of out of touch with that world at this point.
Cheers
Phil Hobbs
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
That's the telecom world: huge volumes, no profit.
John Larkin Highland Technology, Inc
jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com
Small Form-factor Pluggable (SFP).
?-)
Are you referring to SFP "Small form-factor pluggable transceiver" ?
Probably!
John Larkin Highland Technology, Inc
picosecond timing precision measurement
jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com
Two other keywords are TOSA and ROSA.
John Larkin Highland Technology, Inc
picosecond timing precision measurement
jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com
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