Re: [8023-10GEPON] [CHANNEL_LINK] RF video issue
Dear Kimura-san,
It is ineed a pity that You did not collect any more information from such a interesting experiment. It would provide us with solid evidence for the link modelling approach. It also seems to defy the theoretical estimations of the SRS and SBS impairments in the presence of 16dBm video overlay ...
I am at a loss - I would personally like to see the results and then start discussing about the implications ...
Best wishes
Marek Hajduczenia (141238)
SIEMENS Networks S.A. - IC COM D1 R
Rua Irmãos Siemens, 1
Ed. 1, Piso 1
Alfragide
2720-093 Amadora
Portugal
* Marek.Hajduczenia@siemens.com
http://www.marekhajduczenia.info/index.php
(+351.21.416.7472 4+351.21.424.2082
-----Original Message-----
From: Mitsunobu Kimura [mailto:mitsunobu.kimura.be@HITACHI.COM]
Sent: quinta-feira, 1 de Março de 2007 11:22
To: STDS-802-3-10GEPON@LISTSERV.IEEE.ORG
Subject: Re: [8023-10GEPON] [CHANNEL_LINK] RF video issue
Dear Marek,
Yes, the range is from +1 to +13 dBm.
But I didn't collected the 10G optics data.
Also I used an ordinary SMF.
The BER curves and the optical power meter told the improved gain.
But it doesn't provide the accuracy.
I just posted the result in this reflecter since I am wondering if
it is beneficial to the 802.3av meeting to make a presentation.
But even in the meeting, what I can show is the 2-line results below.
Regards,
Mitsunobu Kimura
>Dear Kimura-san,
>Thank You for the email and the information.
>Would You be willing to shed more light on the parameters of te Tx module (dithering, model etc.). I understand that the launched power levels were in the range of 1 and 13 dBm and not 1 and -13 dBm.
>Did You consider the PSC in the signal path ?
>When You say "- 10GE improved around 0.2dB gain due to the effect from RF video to 10G" - do You mean that the signal amplitude was actually boosted?
>Are You going to prepare the presentation for this meeting in Orlando ? I believe the channel link ad hoc should see it before ...
>Best wishes
>
>Marek Hajduczenia (141238)
>SIEMENS Networks S.A. - IC COM D1 R
>Rua Irm縊s Siemens, 1
>Ed. 1, Piso 1
>Alfragide
>2720-093 Amadora
>Portugal
>* Marek.Hajduczenia@siemens.com
>http://www.marekhajduczenia.info/index.php
>(+351.21.416.7472 4+351.21.424.2082
>
>
>-----Original Message-----
>From: Mitsunobu Kimura [mailto:mitsunobu.kimura.be@HITACHI.COM]
>Sent: quinta-feira, 1 de Mar輟 de 2007 10:09
>To: STDS-802-3-10GEPON@listserv.ieee.org
>Subject: [8023-10GEPON] [CHANNEL_LINK] RF video issue
>Importance: High
>
>Dear all,
>
>I am Mitsunobu KIMURA of Hitachi.
>I've conducted an experiment to see the raman effect between 10GE LAN PHY
>and RF video last month.
>But the RF video I tested is a particular system currently working in Japan,
> which follows ITU-T Recommendation J.185.
>
>The results are just simple:
> - No effects were found from 10G to RF video
> - 10GE improved around 0.2dB gain due to the effect from RF video to 10G
>
>Conditions:
> - 10GE LAN PHY: 1571, 1591, or 1611nm; TX power 1-13dBm
> - RF video: 1558nm; Tx power 16dBm; follows ITU-T Recommendation J.185
> - Transmitted via 20km SSMF
> - The optical filters completely separated the two optics
>
>So far, I may say that we have a nice RF video system to survive on the 10GEPON.
>
>For your reference, the J.185 is "Transmission equipment for transferring
> multi-channel television signals over optical access networks by FM conversion" .
>It has more robustness than AM transmission system does as shown in a letter:
> IEEE Photonics Technology Letters. Vol.8 No.6, June 1996 .
>
>
>Regards,
>Mitsunobu Kimura
>Hitachi Communication Technologies, Ltd.
>