Fiber Optics - Receivers

Image	Part Number	Description / PDF	Quantity	Rfq
	1641L2 Broadcom	10G PIN ROSA	0
	HFBR-782BEZ Broadcom	RECEIVER FO 12X2.7GBD EXT SHIELD	0
	HFBR-2515B Broadcom	RCVR OPTICAL 1.5MBD PROFIBUS ST	0
	HFBR-782BEHZ Broadcom	RECEIVER FO 12X2.7GBD EXT SHIELD	0
	HFBR-2506AM Broadcom	RCVR OPTICAL 16MBD SERCOS SMA	0
	HFBR-2116TZ Broadcom	RCVR MODULE 1300NM 155M 16DIP ST	0
	HFBR-2523 Broadcom	RCVR OPT LOW CURRENT HORZ	0
	HFBR-2525E Broadcom	RCVR OPTICAL 10MBD	0
	AFBR-742BEZ Broadcom	RECEIVER 12X2.5GBD PLUGGABLE	0
	HFBR-2528 Broadcom	RCVR OPT HI PERFORM 10MBD HORZ	0
	HFBR-2521 Broadcom	RCVR OPT HI PERF VERS LINK HORZ	0
	AFBR-742BZ Broadcom	RECEIVER 12X2.5GBD PLUGGABLE	0
	HFBR-2510 Broadcom	RCVR OPTICAL 125MBD SMA	0
	HFBR-2524 Broadcom	RCVR OPT VERSATILE LINK HORZ STD	0
	HFBR-2522 Broadcom	RCVR OPT HI PERF VERS LINK HORZ	0

Fiber Optics - Receivers

1. Overview

Fiber optic receivers are optoelectronic devices that convert optical signals transmitted through optical fibers into electrical signals. As critical components in fiber optic communication systems, they perform photon-to-electron conversion through semiconductor materials like silicon (Si), indium gallium arsenide (InGaAs), or germanium (Ge). Modern high-speed communication networks, sensing systems, and data centers rely on these devices for reliable signal detection with bandwidth capabilities extending from hundreds of MHz to 100+ Gbps.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
PIN Photodiode	High linearity, low capacitance, fast response (ns range)	Telecom networks, optical power meters
APD (Avalanche Photodiode)	Internal gain mechanism, improved SNR	Long-haul DWDM systems, LIDAR
Phototransistor	High sensitivity, low cost	Short-range links, industrial sensors
Integrated Receiver	Combined detector and transimpedance amplifier	400G/800G optical modules

3. Structure and Components

Typical fiber optic receiver architecture includes:

Optical Interface: FC/SC/LSH connectors with anti-reflective coated windows
Photodetector: Semiconductor chip with active area (50 m-2mm diameter)
Thermal Management: Heat sink or TEC (thermoelectric cooler) for stability
Pre-amplifier: Transimpedance amplifier (TIA) for current-to-voltage conversion
Electrical Interface: SMA/BNC connectors or PCB-mounted pads

4. Key Technical Specifications

Parameter	Description	Importance
Responsivity	0.5-1.5 A/W	Determines conversion efficiency
Bandwidth	100MHz-100GHz	Limits data transmission rate
Dark Current	<10nA	Impacts signal-to-noise ratio
Operating Wavelength	850nm/1310nm/1550nm	Matches fiber transmission windows
Dynamic Range	-20 to -60dBm	Defines signal power tolerance

5. Application Fields

Primary application domains include:

Telecommunications: 5G fronthaul/backhaul, DWDM networks
Data Centers: 400G QSFP-DD optical modules
Medical: Endoscopic imaging systems
Industrial: Optical proximity sensors
Aerospace: Fiber optic gyroscopes (FOG)

Case Study: 100G LR4 receiver modules in backbone networks enable 10km transmission with four 25G channels via wavelength division multiplexing.

6. Leading Manufacturers and Products

Manufacturer	Product Series	Key Features
Finisar	FTRx-100G	C-band 100G coherent receiver
Hamamatsu	G12132-01	Planar InGaAs APD array
Lumentum	OC5xx Series	High-power photodiode modules
Thorlabs	DET01CFC	Compact fiber-coupled receiver

7. Selection Guidelines

Key considerations for component selection:

Match wavelength sensitivity to transmitter (850nm/1310nm/1550nm)
Ensure bandwidth exceeds system data rate by 20%
Select appropriate dynamic range for link budget
Evaluate temperature stability (-40 to +85 C operational range)
Consider form factor (TO-can, butterfly package, surface-mount)

Industry Trends Analysis

Future development shows:

Integration of photodetectors with CMOS circuits (SiPh)
Adoption of Bessel filters for 0.5THz+ bandwidth receivers
Cost reduction through silicon photonics mass production
Advancements in single-photon avalanche diodes (SPADs) for quantum communication
Miniaturization for pluggable modules (OSFP, QSFP-DD)

Market growth projections indicate 9.8% CAGR until 2027, driven by 5G and hyperscale data center expansions.