363-206-305
Technical Specifications
Issue 3 June 2000
10-15
Table 10-5. 22D-U OLIU Link Budgets (Note 1)
Notes:
Parameter
22D-U
Minimum Wavelength (
λ
Tmin
) 1270/1260* nm
Maximum Wavelength (
λ
Tmax
) 1380 nm
Spectral Width (
δ
λ
rms
)
170 nm
â€
Maximum Transmitter Power (P
Tmax
)
−
14.0 dBm
Minimum Transmitter Power (P
Tmin
) -18.8/-21.8 dBm
Maximum Received Power (P
Rmax
)
−
14.0 dBm
Minimum Received Power (P
Rmin
) -33.8/-31.8* dBm
Minimum System Gain (S-R)‡ 15/10.0* dB
Optical Path Penalty (P
O
)
§
1.6 dB
Connector Loss
¶
1.5 dB
Unallocated Margin
∗∗
2.0 dB
Minimum Loss Budget 0.0 dB
Maximum Loss Budget
†â€
9.9/4.9* dB
Maximum Span Length
‡‡
(Note 2)
1. All terminology is consistent with TR-253, Issue 2. All specifications for the
22D OLIU meet or exceed intermediate reach (IR) values described in
GR-253, Iss. 2.
2. Multimode only (See Table 10-8.).
∗
When two numbers are given, the number before the slash is the
specification for operating under controlled environmental conditions. The
number following the slash is the specification for uncontrolled
environmental conditions. If only one number is given, it applies to both
controlled and uncontrolled environmental conditions.
†Full width at half maximum (FWHM) spectral width.
‡ The minimum system gain for the DDM-2000 already takes into account
aging, temperature, and manufacturing tolerances as these figures are built
into the minimum transmitter power. The DDM-2000 system gain can, thus,
not be directly compared with the DDM-1000 system gain because the
DDM-1000 system gain does not include all of these effects. A similar
penalty, called eye margin, is subtracted from the DDM-1000 loss budget
after the value of system gain is determined.
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