Transceiver Optical Interface Specifications

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Introduction

As an alternative to Fiber Optic Link Certification, you may consider measuring Optic Power of the signal at the receiver's end and compare those results with the tables below.

These are Transceiver Optical Interface Specifications for the most common Network Standards.  ANY optical tranceiver that lists itself as compliant with the standards, MUST be able to operate correctly when the power of the optical signal at the receiver fals in the range between Receiver Sensitivity and Receiver Saturation.  Transceivers by certain vendors may perform better, resulting in higher limits for loss and length.

These tabels will be updated we come accross specification for other interface types.

 

Solution

 

 

Permanent Damage

Most receivers used in enterprise networking will suffer permanent damaged when exposed to an optical power input of +5dBm or more. 

This should not be a problem, as Average Launch Power of an transmitter does not exceed +4.0dBm. 

 

Receiver Saturation

This is the  power level at which the receiver is no longer capable of decoding the signal received.  You could say that the receiver is "blinded" by the intense radiation of the transmitter at the far end. 

In such cases, you shoud switch to a receiver that is designed for the lenght of the link.  If this is impossibe - for example with very short single mode fiber optic links - consider the use of attenuators.

 

10 Gigabit Optical Interface Specifications

  Optical interface Standard Wavelength (nm) Receiver Saturation (dBm) Receiver Sensitivity (dBm) Maximum Distance rx--tx
10GBASE-E and -ER Single-mode IEEE 802.3ae - 2002 1550 -1.0 -15.8 OS1/OS2: 40km
10GBASE-L and -LR Single-mode IEEE 802.3ae - 2002 1310 +0.5 -14.4 OS1/OS2: 10km
10GBASE-LRM Multi-mode IEEE 802.3aq - 2006 1310 +1.5 -6.5

OM3:220m

OM4/OM5: not specified

10GBASE-S and -SR Multi-mode IEEE 802.3ae - 2002 850 -1.0 -9.9

OM3: 300m

OM4/OM5: 400m

10GBASE-Z and -ZR Single-mode Multivendor agreement 1550 -7.0 -24.0 OS1/OS2: 80km

 

 

 

 

 

 

 

 

 

40 Gigabit Optical Interface Specifications

  Optical interface Standard Wavelength (nm) Receiver Saturation (dBm) Receiver Sensitivity (dBm) Maximum Distance rx--tx