nanog mailing list archives
optical circulator as a bidirectional one fiber solution
From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Tue, 7 Aug 2018 21:46:03 +0200
HelloThere is a lack of bidirectional one fiber (BIDI) options for 40G and 100G optics. Usually BIDI is implemented using two CWDM wavelengths, one for tx and one for rx. However there is also a lack of CWDM and DWDM options for 40G and 100G.
Would it be possible to use an optical circulator like this one (customized to 1310 nm)?
https://www.fs.com/de/en/products/33364.htmlCombined with a traditional two fiber 1310 nm 10 km 40G QSFP module like this: https://www.fs.com/de/en/products/24422.html
The link distance would be 5 km.The optical circulator separates tx and rx by the direction the light travels in. It would work even though both directions use the same wavelength. There will likely be some reflection but hopefully attenuated enough that it is regarded as background noise.
Has anyone done this? Any reason it would not work? Regards, Baldur
Current thread:
- optical circulator as a bidirectional one fiber solution Baldur Norddahl (Aug 07)
- Re: optical circulator as a bidirectional one fiber solution Daniel Corbe (Aug 07)
- Re: optical circulator as a bidirectional one fiber solution Eric Kuhnke (Aug 13)
- Re: optical circulator as a bidirectional one fiber solution Ben Cannon (Aug 13)
- Re: optical circulator as a bidirectional one fiber solution Eric Kuhnke (Aug 13)
- RE: optical circulator as a bidirectional one fiber solution Jameson, Daniel (Aug 13)
- Re: optical circulator as a bidirectional one fiber solution Ben Cannon (Aug 13)
- Re: optical circulator as a bidirectional one fiber solution Brandon Martin (Aug 13)
- RE: optical circulator as a bidirectional one fiber solution Jameson, Daniel (Aug 13)
- Re: optical circulator as a bidirectional one fiber solution Eric Kuhnke (Aug 13)
- Re: optical circulator as a bidirectional one fiber solution Jared Mauch (Aug 13)
- Re: optical circulator as a bidirectional one fiber solution Daniel Corbe (Aug 07)