127B Agere Systems, 127B Datasheet

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127B

Manufacturer Part Number
127B
Description
InGaAs Avalanche Photodetector
Manufacturer
Agere Systems
Datasheet
September 1998
The 127A/B/C APDs are compatible with industry-standard
packages.
127A/B/C InGaAs Avalanche Photodetectors
Features
Applications
High performance at both 1.3 µm and 1.5 µm.
Suitable for use in harsh environments.
Higher sensitivity and longer wavelength response
than germanium APDs.
Permanently locked fiber alignment and high cou-
pling stability.
Reliable planar structure with InGaAsP layer and
dual guard ring for high-speed performance.
Wide bandwidth:
— >1.0 GHz (127A)
— >1.8 GHz (127B)
— >2.5 GHz (127C)
Compatible with industry-standard packaging.
Applications for high data rates: up to 1.5 Gbits/s
(127A) or 2.5 Gbits/s (127B/C).
Low capacitance.
Standard pigtail is a multimode fiber with an
FC/PC connector; other pigtails or connectors
available on request.
Telecommunications
— High-speed, long-haul communication systems
— High-speed metropolitan area networks
— Submarine cable communication systems
Military
— Very low-noise receivers
— Satellite transmission
— Optical radar
— Free-space optical communication systems

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127B Summary of contents

Page 1

... GHz (127A) — >1.8 GHz (127B) — >2.5 GHz (127C) Compatible with industry-standard packaging. Applications for high data rates 1.5 Gbits/s (127A) or 2.5 Gbits/s (127B/C). Low capacitance. Standard pigtail is a multimode fiber with an FC/PC connector; other pigtails or connectors available on request. ...

Page 2

... FC/PC connector, is aligned with the photodetector chip by means of the metal flange. Other pigtails or con- nectors are available upon request. The 127A and 127B differ only in the bandwidth. The 127C has modified crystalline layers to provide an increased bandwidth. ...

Page 3

... Capacitance: 127A 127B 127C Gain Coefficient:* 127A 127B 127C † Responsivity: 127A 127B 127C * The A coefficient and the breakdown voltage are given for each APD. The gain at any voltage (for M > 3) can be calculated from these para- meters per A/(V – ...

Page 4

InGaAs Avalanche Photodetectors Characteristic Curves (T Figure 1. Frequency Response (127A/B) Note: Responsivity = chip quantum efficiency x pigtail coupling effi- ciency x gain x (µm)/1.24. The minimum chip quantum effi- ciency is 80%, and the minimum pigtail coupling ...

Page 5

Data Sheet September 1998 Characteristic Curves (T Figure 5. Dark Current vs. Reverse Bias (127A/B) Figure 6. Dark Current vs. Reverse Bias (127C) Lucent Technologies Inc. 127A/B/C InGaAs Avalanche Photodetectors = 25 °C) (continued) A 1-606 (C) Figure 7. Excess ...

Page 6

InGaAs Avalanche Photodetectors Characteristic Curves (T APD Receiver Sensitivity The following figure illustrates typical receiver sensitivity at a receiver rate of 1.7 Gbits/s and for an InGaAs PIN, Ge APD, and InGaAs APD °C) (continued) A ...

Page 7

Data Sheet September 1998 Qualification Information The 127-Type APD Module has been subjected to the following qualification tests with the intent of meeting Bellcore TR-NWT-000468 requirements. Not all of the 468 tests have had to be performed specifically on the ...

Page 8

... Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Copyright © 1998 Lucent Technologies Inc. All Rights Reserved Printed in U.S.A. September 1998 DS98-426LWP (Replaces DS95-103LWP) Part Number Comcode 127A 105742969 127B 105742977 127C 106186299 Data Sheet September 1998 ...

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