HFBR-53A3VEM 查看數據表（PDF） - HP => Agilent Technologies

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HFBR-53A3VEM

3.3 V 1 x 9 Fiber Optic Transceivers for Fibre Channel

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HFBR-53A3VEM/FM, 850 nm VCSEL

Transmitter Optical Characteristics

(TA = 0°C to +70°C, VCC = 3.14 V to 3.47 V)

Parameter

Symbol

Min.

Typ.

Max. Unit

Reference

Output Optical Power

50/125 µm, NA = 0.20 Fiber

POUT

–10

–4

dBm avg.

Output Optical Power

62.5/125 µm, NA = 0.275 Fiber

POUT

–10

–4

dBm avg.

Optical Extinction Ratio

9

dB

1

Center Wavelength

Spectral Width – rms

λC

830

850

860

nm

σ

0.85

nm rms

Optical Rise/Fall Time

tr/tf

RIN12

Deterministic Transmitter Jitter

0.45

ns

–116

dB/Hz

188

ps

2, 3, Figure 1

Receiver Optical Characteristics

(TA = 0°C to +70°C, VCC = 3.14 V to 3.47 V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Reference

Input Optical Power

PIN

–16

Operating Center Wavelength

λC

770

Return Loss

12

0

dBm avg. 4

860

nm

dB

5

Signal Detect – Asserted

Signal Detect – Deasserted

Signal Detect – Hysteresis

PA

PD

–30

PA – PD

1.5

–17

dBm avg.

dBm avg.

dB

Notes:

1. Optical Extinction Ratio is defined as the ratio of the average optical power of the transmitter in the high (“1”) state to the low (“0”) state.

This Optical Extinction Ratio is expressed in decibels (dB) by the relationship 10log(Phigh avg/Plow avg).

2. These are 20-80% values and include the effect of a fourth order filter.

3. Laser transmitter pulse response characteristics are specified by an eye diagram (Figure 1). The characteristics include rise time, fall time, pulse

overshoot, pulse undershoot, and ringing, all of which are controlled to prevent excessive degradation of the receiver sensitivity.

4. The receive sensitivity is measured using a worst case extinction ratio penalty while sampling at the center of the eye.

5. Return loss is defined as the minimum attenuation (dB) of received optical power for energy reflected back into the optical fiber.

7

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