Delta Electronics LCP-8500A4EDR manual Link Length, Optical Characteristics

Preliminary

LCP-8500A4EDR

Optical Characteristics

(VCC=3.135V to 3.465V, Data Rate=8.5Gb/sec, PRBS=27-1 NRZ, 50/125∝m MMF)

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Transmitter				-1.8
Output Optical Power (Avg.)	PO	-8.2			dBm
Optical Modulation Amplitude	OMA	302			∝	1
				860	W
Center Wavelength	λ	840	850		nm
Spectral Width (RMS)	σ			0.65	nm
Optical Rise/Fall Time (20% - 80%)	tr/ tf			50/50	ps	2
RIN12OMA				-128	dB/Hz	3
Output Eye	Complies	with the ANSI FC-PI-4 Rev. 6.01 specification, and is class
	1 laser eye safety

Receiver
Sensitivity in OMA
@8.5Gbps	PIN
@4.25Gbps
@2.125Gbps
Input Optical Wavelength	λ	840	850
Average Received Power, max	Rmax	0
LOS-De-asserted (Avg.)	PD
LOS-Asserted (Avg.)	PA	-30
LOS-Hysteresis	PD -PA	0.5
Optical Return Loss	ORL	12

76

61

49

860

-14

∝W

nm

dBm

dBm

dBm

dB

dB

4

Link Length

Data Rate/Standard	Fiber Type	Modal Bandwidth	Distance Range(m)	Notes
		@850nm (MHz*km)		.
	62.5/125 ∝m MMF	200	0.5 to 21	5
8.5Gbps	50/125 ∝m MMF	500	0.5 to 50	5
	50/125 ∝m MMF	900	0.5 to 90	5
	50/125 ∝m MMF	1500	0.5 to 120	5
	50/125 ∝m MMF	2000	0.5 to 150	5

Notes:

1.Equivalent extinction ratio specification for Fiber Channel. Allows smaller ER at higher average power.

2.Measured at nominal data rate. These are unfiltered 20%~80% values.

3.Transmitter Dispersion Penalty is measured using the methods specified in the IEEE standard 802.3-2005 Clause 52 except that the transversal filter differential delay is 33 ps.

4.The sensitivity is tested at a BER of 1×10-12or better with an input signal consisting of 27-1 NRZ PRBS.

5.Distance, shown in the “Link Length” table, are calculated for worst case fiber and transceiver characteristics based on the optical and electrical specifications shown in this document using techniques utilized in IEEE 802.3. In the nominal case, longer distances are achievable.

3	2008/7/16
	Rev. 0A
DELTA ELECTRONICS, INC.	www.deltaww.com